I recently got a Glock 20 Gen 4 handgun. It feeds the 180gr Fiocchi JHP ammo I've been shooting fine with the stock barrel or the 6" KKM barrel I got for shooting HC ammo. With the 200gr Underwood HC ammo I got to try it is jamming after the 3rd round with a full magazine. The slide is coming forward and hanging up about the middle of the case, leaving the round pushed down in the magazine. I'm guessing from some online research this means I need a stiffer spring? What would you recommend and should I also change the guide rod?
Thanks for the help. I am trying to get the Glock set up to carry on some Alaska and other hunts. I'll be hunting with a rifle, but want to have a handgun also for when I'm fishing or don't have the rifle within arms reach. I like shooting the 10mm and am lucky enough to be able to shoot it in my yard. I want to get a reliable set-up figured out to practice with and carry.
Well those HC may be part of the issue. Can you measure the MEPLAT and the cartridge overall length...
Some of the Wide Flat Nose bullets 0.300" and wider needed to se seated a little shorter to improve the tipping angle as the cartridge feeds from the magazine, and as the case head tries to exit the magazine and start up the breech face...
Are you having the feed issue while racking the slide or as the next cartridge is being fed after shooting and ejecting the empty spent casing? ???
If it is not feeding the next after a shot it could be related to the slide velocity as well...
My Gen 4 G20 and G40 feed the Underwood hardcast loads.
If it's not the bullets as Shadow suggests you might want to try the 24 pound RSA from Glockmeister.
https://www.glockmeister.com/Glockmeister-Stainless-Steel-Recoil-Spring-Assembly-for-Gen-4-20-21-40-41/productinfo/G4SS20CS/
I use it in my Gen 4's and it works great with Underwood.
Thanks. The bullets feed fine when I rack the slide. I dont have batteries for my calipers now. I will get some and maybe order the spring too.
Quote from: mcseal2 on April 30 2019 08:50:48 PM MDT
Thanks. The bullets feed fine when I rack the slide. I dont have batteries for my calipers now. I will get some and maybe order the spring too.
Probably...
Your magazine is hanging up/too slow to present the round to the top of the mag. This is why they cycle fine by hand, but not in firing. First we need to establish if the rounds are hanging up in the magazine at #3 or not. The fact that it is consistently at that round count makes me think there is some kind of binding. If there is binding, rectify and test again.
If not....
The higher slide velocity is causing the slide to rebound off the impact abutment at the end of travel, causing it to try to feed from the magazine much faster than with lower impulse data. As a result the magazine has not yet fully presented the base of the round to the slide face (bolt) and it is slipping under. Why this only happens with the 3rd round could be due to a number of reasons, and probably is not relevant to the fix.
There are two possible solutions. Slow down the slide, which requires a stronger RSA, or speed up the magazine with a stronger mag spring. Or both may be needed, though I doubt it since this only happens relatively rarely (1 in 15).
I might not have been clear enough. It was not only on the 3rd round, it was on the 3rd round and all past that in the magazine. I think round 1 and 2 may have fed ok just due to the increased spring tension in the magazine with it almost full. I'm guessing this means the recoil spring is the most likely issue?
I would suspect the slide is out-running the mag due to rebound. +10% mag springs, or an stiffer RSA or both.
Thanks. If the recoil spring doesn't do it I'll see about mag springs. Hopefully this does it.
Well the 24lb spring didn't fix the problem. Called KKM and they suggested a 22lb spring for the 200gr ammo. They said the 24lb is best with really hot 220 or 230gr loads. I ordered a 22lb spring assembly from Glockmeister. I also have a couple boxes of 220gr Underwood ammo and a +10% mag spring on order from Midway. Hopefully some combo of these is reliable in my Glock. I had free shipping on the Midway order so I added the mag spring, it's cheap enough I didn't want to find I needed it later and have to pay more to ship it than the spring cost.
Shot more of the 180gr stuff and I'm through 3 full boxes now. I still haven't had a failure of any kind with either barrel with it. It's apparently just the hot bear loads it has issues with.
What happens if you just unload a magazine by thumbing the rounds out? Does the next round pop right up, or do they sometimes hesitate a bit.
The rounds pop right out with no hesitation.
The 220gr ammo from Midway came in today. I tried it and had the same issues with both the stock and 24lb recoil spring. I put it up and did some work for a while. Toward evening I got the +10% Wolf mag spring put in one magazine and tried it again. With the KKM barrel, stock recoil spring, and that mag I got 5 of the Underwood 220gr rounds to feed fine. I had a buddy show up to borrow a trailer then and didn't get any more shooting done. Those 5 landed in the 3"x3" piece of cardboard I had stapled up on my target board to shoot at 15 yards, so it was showing promise. I need to get more shot, probably be Sunday before I can do that. Helping a friend drag calves tomorrow and it will be a long day.
Maybe I'm finding a solution.
Thanks to everyone for your help. I'll post again after I get more rounds fired.
I might try a few round through the stock barrel and see if it improves. I realize we aren't supposed to fire lead in a Glock barrel, but you can fire a few through it with proper cleaning afterwards. I have done this without issue.
I also have fired powder coated ammo it has not been a problem in my Glock(s).
I have been thru all the same problems you are experiencing and have found solutions! I have a G20 gen3. Had feed problems with UW200HC.
Tried 22 and 24lb captured recoil springs, no better. The problem is that the mag spring isn't strong enough to push the stack up with the higher slide velocity. The 24lb spring aggravates the problem as it returns the slide faster. I have a friend who experimented with all types of fixes and we agree on the solutions.
The +10% mag springs didn't work! What does work is a 19 or 20lb uncaptured Wolf recoil spring on a Wolf guide rod coupled with using two G20 mag springs. The "double spring" mag will hold 12-13 rounds not 15! I have also tried mag springs from a company that does comped conversions to Glock 45cal (promised friend I wouldn't reveal their name) that work just like the double spring. Another forum member found success using a double spring from a Glock 19 (9coil). With the G20 double mag spring I got 50% slide lock back with one round remaining, problem being the follower pops up further and catches the slide lock. The solution is to cut down the little"nub" on the follower that engages the slide stop.
So, with the 19lb recoil spring and double G20 spring mags with the followers modified my G20 now functions 100% with the UW200Hc and all the other ammo I've tried. The only downside is you lose two rounds of mag capacity. I am going to try my new Glockmeister +2 mag extensions with the G20 double spring to see if I can find a 15rd solution.
Hope this helps from one who has done extensive testing to fix this problem!
Thanks very much, that is sure worth a shot. I'll give it a shot when my 22lb spring arrives if that doesn't fix the problem. I'll try the double mag spring with the stock and 22lb springs first since I already have them. I'm not worried about capacity, the chance of getting more than 2-3 rounds off if I have to deal with a bear is pretty small. I just want reliability and accuracy for those rounds.
I should add, I tried the factory barrel, recoil spring, mag, stock everything with the 220gr Underwood HC earlier today also, 2 failures to feed in 5 rounds.
I'm starting to wonder if it's the weapon itself. I have shot several boxes of Underwood's 220 Grain Hard Cast Flat Nose through my G20 gen 4 with no issues, as well as with a KKM barrel
Thanks
Ken
I have measured the Underwood 220 WFN Hard cast cartridges with Meplat 0.280", C.O.A.L. 1. 2520" - Meplat 0.2810", C.O.A.L.: 1.2660".
Based on troubles others have had with WFN bullets with even wider Meplats they were loaded seated to 1.2420" to improve feeding situations.
You should see if you can improve feeding by having them seated slightly deeper (shorter COAL) to help with the tipping angle as the cartridge strikes the roof of the chamber and the head tries to slide up the breech face to fully chamber.
Quote from: The_Shadow on May 06 2019 06:05:27 PM MDT
I have measured the Underwood 220 WFN Hard cast cartridges with Meplat 0.280", C.O.A.L. 1. 2520" - Meplat 0.2810", C.O.A.L.: 1.2660".
Based on troubles others have had with WFN bullets with even wider Meplats they were loaded seated to 1.2420" to improve feeding situations.
You should see if you can improve feeding by having them seated slightly deeper (shorter COAL) to help with the tipping angle as the cartridge strikes the roof of the chamber and the head tries to slide up the breech face to fully chamber.
I don't think it was that kind of FTF; mine were always "bolt over round" FTFs where slide causes nose down in mag jams, caused by round not up high enough when slide comes forward.
Just wondering if there is any difference in performance between an after market single spring RSA that is captured and non captured ones. Hope I was clear in my asking.
After talking to KKM they recommend trying Double Tap ammo. I have some on order. I have my doubts that it will work though, the HC failures occur with the factory barrel also and either the 22lb or factory recoil spring.
Underwood Extreme Penetrators have fed flawlessly (40 rounds) and Fiocchi 180gr JHP's (300+ rounds) have fed without a single malfunction. That is with any combo of barrel, recoil spring, and mag spring I have tried. Not sure what the deal is.
My Gen4 didn't like the UW 220 HC.
Everything else runs fine.
Greg
Evening mcseal2,
Have you discussed this with Glock?, letting them know the two types of ammo that function properly, and that the rest have reliability issues. My G20 / gen 4 eats everything, and begs for more. This is also the case with my KKM barrel / factory recoil set up. Something just seems off. I have owned numerous Glocks over the years, and have all been extremely reliable. Just my 2 cents
Ken
I rarely post, but I had a great experience today. I've been trying to figure this same issue out as well for awhile. G-20 Gen 4. Finally bought another G-20 Gen 4 about 6 months ago to see if it was just the first gun. Both guns perform just about identical. My original is 3+ years old. Have tried recoil springs in various weights, Wolff Mag springs, etc. Nothing seemed to make a difference. I know the common denominator is the shooter... but I think I have good enough technique that, that is not the entire issue. I have/shoot 3 diff M&P 45's as both my carry and home defense units and have no issues with them. My accuracy is decent. Was trying to get UW HC to shoot (220gr and 200gr). After the new gun I decided to give up on UW and try working up my own load using Montana Bullet 200gr HC (have been following a couple of other threads on here discussing COAL, tipping etc. where others have had success). But unfortunately that also has not been working. Typically have jams starting with the 1st to 5th round, usually multiple per mag for any of the more powerful loads. Lighter loads, both my target reloads or factory have always worked fine.
Saw this thread this morning, Iceman's post in particular. I have several extra stock mag springs left from the Wolff spring replacements I did so doubled up on the mag springs in two of my mags (I have 9 mags now, so it's not a specific mag issue) and headed to the range. Got 13 rounds in the mag with a 14th in the chamber. UW HC 220 and my latest reload attempt at 1.215 COAL 8.0gr Long Shot and every Mag I shot worked great until either the last or second to the last round. Shot 6 mags and every one had a jam at the end, but performed without any problem until then. For me this is a success story. I have wanted this as my woods carry gun. 11 reliable rounds is OK by me (1 in the chamber, 10+ from the Mag with one or two left). Hopefully will never get to the jam except at the range if this continues to hold. Interesting thing is that today on my reloads (shorter length than the UW) the jams were all nose up against the top back of the barrel, never entered the chamber. Normally the jams have been nose up, but part way into the chamber with the breach face a little over the round as Iceman described. I had a 22 lb recoil spring in, and am going to get a hold of a 19 or 20 lb spring. Will also lengthen the COAL on my reloads a bit and see if that helps in combo with the beefed up Mag spring. Shooting the gun, there was no detectable difference to me with the extra spring strength when there is no FTF.
Thanks for sharing your experience Iceman, you helped me. I've been thinking of getting rid of the Glocks and trying a different make in 10MM, but I really like that I can swap in a 6 inch barrel if/when I want to (by the way, in my experience 220gr UW HC do not tumble with the 6inch barrel in either my glock or kkm barrel, a whole other topic).
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Just got back from the range again. Offsetting the doubled up mag springs by 1 coil fixed my jamming on the second to last round problem. I suspect there's a release of tension on the Mag walls on those last two rounds as they line up one on top of the other in the narrower neck at the top of the mag. I figured offsetting the springs might reduce that at the longest extension of the spring. Appears to work.
It's always nice to get to bottom of these frustrating issues, nice job!
Good info thanks guys.
I've tried the double mag spring without success. I have not talked to Glock but did talk to Underwood and KKM. KKM recommended trying Double Tap ammo, they said that is what they test with. I have some on order so I'll try it as soon as it shows up. The only thing I've had success with so far is the UW Extreme Penetrator 140 grain. Underwood considers that a bear worthy load. KKM also said they would polish the feed ramp more if the DT ammo doesn't work. I still have my doubts that the feed ramp is the problem since it occurs with either the factory barrel or the KKM barrel and both the factory and 22lb recoil springs.
Sorry the double mag spring doesn't work for you. I've been back to the range with it 2 more times now and have not had a single jam (I don't recall ever getting through a complete mag of Underwood without a jam before). I bought some of the wolff brand springs ($2 ea. if you buy 3 or more). I got the 9 coil, that are what get used in the G 29 among others. I cut one more coil off the bottom of the 9 coil reformed that bottom loop and added that in with the Stock G-20 mag spring and did not offset the springs, both were flush up against the follower. Set two mags up that way and both functioned today with my peppy'r reloads, no problems. Still could only get 13 rounds in the Mag. Also, the first time I tried this I had a 22lb recoil spring in. The last two have been the stock recoil spring. So for me, recoil spring does not appear to be the issue. I hate having to rig this, but if it works... you don't know how much time I have spent trying to get this to work. Way to much.
On another note. Since I am focused in on all of this right now, I went out yesterday and bought an SA XDM 10MM 5.25. Took that with me today and shot one mag of the Underwood hardcast and 4 mags of my reloads. No problems at all!! I am going to give it a few more tries and if the experience holds I plan to pick up an XDM 4.5" as well. I do admit that part of my particular problem could be my technique and perhaps the XDM is just more forgiving.
I was talking to a guy as we left the range today. He had a new 9MM he was shooting today and I mentioned that I was there with the XDM for the first time. He said he had tried 10MM several years ago with a gen 3, G-20. Said he finally sold it, because he could not deal with the constant jamming... he offered that comment up before I had ever mentioned my problems with the glock.
Powerstroke I think you hit the nail on the head.
With the light weight of a Glock 10mm, technique is very important. This has been my experience as well.
Enjoy your new Springfield..
My G20 is off at the gunsmith's now with some of the HC ammo. I'll see what he figures out. The other 10mm I traded for, a Sig Tacops 1911 is feeding everything fine so far. Maybe it was just me. The HC ammo in the G20 didn't seem to kick noticeably more than the 180gr at 1250fps JHP ammo I shot through it, and I never had a failure to feed in around 400 rounds of that through the G20. Would bad shooting form cause jams with one and not the other?
Quote from: mcseal2 on June 18 2019 03:48:57 PM MDT
My G20 is off at the gunsmith's now with some of the HC ammo. I'll see what he figures out. The other 10mm I traded for, a Sig Tacops 1911 is feeding everything fine so far. Maybe it was just me. The HC ammo in the G20 didn't seem to kick noticeably more than the 180gr at 1250fps JHP ammo I shot through it, and I never had a failure to feed in around 400 rounds of that through the G20. Would bad shooting form cause jams with one and not the other?
Short answer is yes. The Sig is an all steel 1911. Steel frame 1911's are not prone to wrist technique issues. Glocks (my favorite pistols) can be prone to this due to their lightweight polymer frames. This has been my experience with them.Full power 10mm requires a tight wrist lock.
Absolutely, my wife had issues with the G20, but none whatsoever with my RIA FS / HC 10mm
I guess if it shoots fine for him I'll know what the problem is. Thanks everyone.
Hey mcseal2, I'll be curious to see what you come up with. I now have the XDM 10MM in both 4.5 and 5.25. I cannot get either one of those to jam in several trips to the range, not a single time. Underwood 220 and 200 gr and my reloads all of which jam my G20 gen 4s consistently (both of them). 3 weeks ago I sold my 2nd gen 4 and picked up a G20 SF (which as far as I can tell is still mostly the Gen 3 version with just the gen 4 grip, no back straps). I have only had that to the range once, but guess what, not a single jam, same ammo, Underwood (2 mags of 200gr) and my peppier reloads (6 mags) and stock mag springs, all mags fully loaded with 15 rounds. Neither of the gen 4's would ever make it through those 8 mags (with me as the shooter...). I didn't want to give up on the G20 just because there are so many options there for upgrades (barrels, sights, etc. both of which I already have), vs what's available for the XDM. If my experience holds up on the SF, I will be swapping out the sights from my 1st Gen 4 and then selling it. Luv the XDM's too, but the available options just are not there yet as far as I can find. There are other threads on this sight where the Gen 4 was a problem. Maybe the Gen 4's just take more experience to shoot (i'm going to choose to tell myself that's not it, and that there may be a flaw there) , but if the SF works with my level of skill, that's going to be my backpacking carry.
My gunsmith is bringing it back this weekend. He moved to Texas this year and hasn't been back home since I sent the gun with him.
He says it fed fine with limited amount of hardcast he took with him after some work. It was a mix of Buffalo Bore and Underwood. He didn't find any more locally to try.
He first polished the feed ramp and that did not work. Then he polished the trigger bar and other internals. He said it works now, also the trigger pull dropped from 8.5lbs to 5.5lbs. I have 90 rounds of hardcast in 200-230gr weights from Underwood and Double Tap waiting for it to arrive. I will post again once I get it shot and hopefully find a load that will work for me.
Thanks everyone for the input.
Good luck! My Gen 4 feeds the 230 grain Doubletap Hardcast without issue. You shouldn't have a problem.
My gen-4 Glock 20 wouldn't function with hot loads (especially 220 Underwood's) without changing out the recoil spring. Forget if I went with a #20 or #22 spring from Lone Wolf, but it solved the feeding issues with the 220 Underwood's, and it feeds everything else just fine, too.
I put in a #24 spring, and while it might have been ok with 220 Underwood's, it wouldn't function with any other ammo reliably so I took it out.
In talking to Underwood they report that the 220 load is the most problematic for people, while the 200 grain hard cast seem to function reliably for most people without any weapon modification.
It makes sense that Glock under-sprung the 10mm, since the vast majority of ammo you can buy for it is little more than .40+p and they might not function in a gun sprung for the full power stuff.
On a side note, the magazine springs in my 10mm are nothing close to the power of the springs in my .40 magazines. I don't recall changing out the springs in the .40 magazines, but maybe I did. I bet the 10mm springs (new) are half the power of the .40 springs. Odd.
I tried a 22 and 24lb recoil spring, tried +10% Wolf mag springs, tried putting 2 factory mag springs in one mag. I tried every possible combo of those things. Nothing worked for me, hopefully it was just a burr somewhere in the gun that is now fixed.
And remember to keep a tight wrist. With the light weight of Glock pistols and heavy ten ammo, if you relax you can cause malfunctions.
I know because it has happened to me. Tighten up the wrist and the malfunctions stop.
Not saying this is necessarily the cause with you, but just something to keep in the back of your mind.
Quote from: Muskrat on July 26 2019 09:51:39 AM MDT
My gen-4 Glock 20 wouldn't function with hot loads (especially 220 Underwood's) without changing out the recoil spring. Forget if I went with a #20 or #22 spring from Lone Wolf, but it solved the feeding issues with the 220 Underwood's, and it feeds everything else just fine, too.
I put in a #24 spring, and while it might have been ok with 220 Underwood's, it wouldn't function with any other ammo reliably so I took it out.
In talking to Underwood they report that the 220 load is the most problematic for people, while the 200 grain hard cast seem to function reliably for most people without any weapon modification.
It makes sense that Glock under-sprung the 10mm, since the vast majority of ammo you can buy for it is little more than .40+p and they might not function in a gun sprung for the full power stuff.
On a side note, the magazine springs in my 10mm are nothing close to the power of the springs in my .40 magazines. I don't recall changing out the springs in the .40 magazines, but maybe I did. I bet the 10mm springs (new) are half the power of the .40 springs. Odd.
Per Underwood's comments above, that's exactly what I found. The 220 Underwood is a truncated cone bullet. I have found it less reliable feeding (in any weight) than my 200 gr WFN Montana's and Beartooth's. As such I'm surprised Underwood sells a heavy truncated cone bullet. But we do know that if it runs in your gun it is really powerful.
Problem is I don't know anybody selling really full power 200 gr WFN ammo. Double Tap is good ammo but is not full power. Yes... I like it that way but it's still not full power.
Quote from: Spudmeister on July 27 2019 08:03:34 AM MDT
Quote from: Muskrat on July 26 2019 09:51:39 AM MDT
My gen-4 Glock 20 wouldn't function with hot loads (especially 220 Underwood's) without changing out the recoil spring. Forget if I went with a #20 or #22 spring from Lone Wolf, but it solved the feeding issues with the 220 Underwood's, and it feeds everything else just fine, too.
I put in a #24 spring, and while it might have been ok with 220 Underwood's, it wouldn't function with any other ammo reliably so I took it out.
In talking to Underwood they report that the 220 load is the most problematic for people, while the 200 grain hard cast seem to function reliably for most people without any weapon modification.
It makes sense that Glock under-sprung the 10mm, since the vast majority of ammo you can buy for it is little more than .40+p and they might not function in a gun sprung for the full power stuff.
On a side note, the magazine springs in my 10mm are nothing close to the power of the springs in my .40 magazines. I don't recall changing out the springs in the .40 magazines, but maybe I did. I bet the 10mm springs (new) are half the power of the .40 springs. Odd.
Per Underwood's comments above, that's exactly what I found. The 220 Underwood is a truncated cone bullet. I have found it less reliable feeding (in any weight) than my 200 gr WFN Montana's and Beartooth's. As such I'm surprised Underwood sells a heavy truncated cone bullet. But we do know that if it runs in your gun it is really powerful.
Problem is I don't know anybody selling really full power 200 gr WFN ammo. Double Tap is good ammo but is not full power. Yes... I like it that way but it's still not full power.
Interesting. Most people seem to report just the opposite...that the larger meplat on the DT's and similar rounds is a significant inhibitor to reliable feeding. I cannot see any reason that a truncated cone would be more likely to jam than a wadcutter.
My impression is that the weight and velocity of the 220 grain Underwood is the issue, not the shape.
As for reliability in a Glock 20, I now remember that in addition to changing recoil springs I also changed out my extractor, and I put in a KKM barrel, though the barrel wasn't because of any reliability issues.
Quote from: Muskrat on July 27 2019 09:28:38 AM MDT
Quote from: Spudmeister on July 27 2019 08:03:34 AM MDT
Quote from: Muskrat on July 26 2019 09:51:39 AM MDT
My gen-4 Glock 20 wouldn't function with hot loads (especially 220 Underwood's) without changing out the recoil spring. Forget if I went with a #20 or #22 spring from Lone Wolf, but it solved the feeding issues with the 220 Underwood's, and it feeds everything else just fine, too.
I put in a #24 spring, and while it might have been ok with 220 Underwood's, it wouldn't function with any other ammo reliably so I took it out.
In talking to Underwood they report that the 220 load is the most problematic for people, while the 200 grain hard cast seem to function reliably for most people without any weapon modification.
It makes sense that Glock under-sprung the 10mm, since the vast majority of ammo you can buy for it is little more than .40+p and they might not function in a gun sprung for the full power stuff.
On a side note, the magazine springs in my 10mm are nothing close to the power of the springs in my .40 magazines. I don't recall changing out the springs in the .40 magazines, but maybe I did. I bet the 10mm springs (new) are half the power of the .40 springs. Odd.
Per Underwood's comments above, that's exactly what I found. The 220 Underwood is a truncated cone bullet. I have found it less reliable feeding (in any weight) than my 200 gr WFN Montana's and Beartooth's. As such I'm surprised Underwood sells a heavy truncated cone bullet. But we do know that if it runs in your gun it is really powerful.
Problem is I don't know anybody selling really full power 200 gr WFN ammo. Double Tap is good ammo but is not full power. Yes... I like it that way but it's still not full power.
Interesting. Most people seem to report just the opposite...that the larger meplat on the DT's and similar rounds is a significant inhibitor to reliable feeding. I cannot see any reason that a truncated cone would be more likely to jam than a wadcutter.
My impression is that the weight and velocity of the 220 grain Underwood is the issue, not the shape.
As for reliability in a Glock 20, I now remember that in addition to changing recoil springs I also changed out my extractor, and I put in a KKM barrel, though the barrel wasn't because of any reliability issues.
Muskrat.... I totally agree with you on the logic of it all. Just thought it was interesting my personal experience matched what Underwood said. The WFN design has worked extremely well (after getting LOA's set) in my G29's, 20's and 40. I never actually ran the Underwood 220 gr but shot of a lot of the truncated cone design in lighter weight bullet reloads. I've loaded the WFN load from mild to wild without issue.
And like you, I never saw a reduction in reliability going from the OEM barrel to a KKM or Storm Lake.
The gunsmith's stoning of the internals seems to have worked. Between us we have put 46 rounds of Hardcast 220 and 200grain Underwood and Double Tap ammo through the gun without a malfunction. I have more ammo coming in Tuesday to continue to test. I think I'll probably end up running Underwood 200gr Hardcast. It shot perfect horizontally and about 2.5" high with the way the new tritium/fiber optic sights are set. My practice ammo (Fiocchi 180gr JHP) shoots the same, so it's a good combo for me. The same can be said both of these ammo choices in my 1911 10mm. The Double Tap 200gr shot a couple inches to the right the way the sights are set.
Quote from: mcseal2 on August 03 2019 01:04:21 PM MDT
The gunsmith's stoning of the internals seems to have worked. Between us we have put 46 rounds of Hardcast 220 and 200grain Underwood and Double Tap ammo through the gun without a malfunction. I have more ammo coming in Tuesday to continue to test. I think I'll probably end up running Underwood 200gr Hardcast. It shot perfect horizontally and about 2.5" high with the way the new tritium/fiber optic sights are set. My practice ammo (Fiocchi 180gr JHP) shoots the same, so it's a good combo for me. The same can be said both of these ammo choices in my 1911 10mm. The Double Tap 200gr shot a couple inches to the right the way the sights are set.
Just read through all of this, wow, what a journey. I will be doing the .25ยข trigger job asap to my G29 when I pick it up hopefully tomorrow. I have all kinds of springs and a steel guide rod on order from Wolff, already have a Storm Lake barrel. The Zev Pro trigger is way backordered, will take until at least mid March to fill.
Basically I am building out a solid woods gun for my numerous solo jaunts in the high country of Colorado where I live. My woods loads as they would be thus far are UW 140gr X Penetrators, UW 220gr HC and G9 145gr Woodsman. I think for now i will just load up the copper monolithic until I can get sound results from the 220gr HC.
If you are still around please let me know how this is all going.
Cheers,
"Gauc"