Loading for a Glock G40

[Ridgerunner665]

41 mag is the same story...

The original spec was for 210 grain bullets at 1,300-1,400 fps.

With a 200 grain bullet at 1,365, I'm pretty sure a 7" 10mm is right in there.


Everyone seems to think I'm trying to say the 10mm is the equal if the current Magnum rounds.....   I'm not.

I'm just saying, give it some barrel length to work with, and it can approach, and even equal some of the original Magnum loads that made the magnums popular.

[sqlbullet]

I get what you are saying.  And I am not trying to be a jackwagon* about it.

Comparisons, at least to me, are all about neutralizing as many factors as possible to compare the actual rounds.  And the methodology you are describing is all about stacking the deck in favor of one cartridge or the other and then saying:

...[the 10mm] can approach, and even equal some of the original Magnum loads that made the magnums popular.

By the same token, I can say my M1 Garand can approach and equal a 300 Win Mag.  Assuming the 300 Win Mag is fired from a 16" barrel and the Garand keeps it's factory length of 24", 50% more than the other cartridge.

And, the 44 WCF nearly doubles the performance of the 44 Magnum, as long as you give a 24" barrel to work with.  1800 fps and 1,438 lbs-ft of energy with a 200 grain bullet.

I guess where is what you are saying worded in a way with which I agree: "Given 40-50% more barrel length the 10mm can equal the terminal ballistics of a 44 Magnum"



*I am revisiting repeatedly because someone who doesn't get internal, external and terminal ballistics like you and I do will come here, read a snippet and then start saying the 10mm is a 44 magnum all over the internet.

[Ridgerunner665]

I hear you.

[Ridgerunner665]

Noticed something in the vast majority of the load data I've been studying lately....

Dang near all of it uses WLP primers for everything from 45acp to 44 Mag.

I'm no fan of Winchester primers after all the bolt faces I've seen them burn, but that does speak to the usability of other magnum primers in non-magnum rounds.

I think I'm going full on CCI 350 for the 10mm, not because I have to, or even need to.... But simply because I have them.

I'm curious to see the velocity difference between 12.6 grains of #9 with the magnum primer.... It was 1,300 fps with the standard primers.

The only powder I'm pushing hard is #9, with all my other loads, the less powder I use to get the performance I want the better.

[The_Shadow]

Lot of times I develop a load using the magnum primers this insures that swaps don't cause issues.
I use CCI for many of my loads but use other brands when testing things out as well.

[sqlbullet]

I think the reason is the WLP produces enough flame/heat to ignite heavy charges of 296 or H110.  And in general, the least primer that will do the job is the most accurate.  That is what drives a lot of benchrest guys to small primers.  It reduces the size of the variability of the primer.

[Ridgerunner665]

15 fps....

Thats the difference the mag primers made... From 1,300 fps, to 1,315 fps.

[Hamopr]

Over the past couple of weeks I have been reloading once fired brass with Ranier 180 grain TCJ hollow points and 180 grain lead flat nose (unknown manufacturer). My Lee Auto powder dispenser throws between 11.4 and 11.6 grains of AA9. From what I understand in this thread this is a mild load for the bullet weight. If not please let me know.

While I have the press set up I thought I would load 20 or 30 rounds of new Star Line brass with 200 grain WFNGC at 11.4 to 11.6 grains of AA9. I plan to get one of the Lee micrometer measure for a more precise charge level.

These rounds will be fired in my (new to me) G40 and possibly my G20.  Appreciate any comments from the learned folk here, positive or negative.

Thanks,

Nick

[Texashogman]

Over the past couple of weeks I have been reloading once fired brass with Ranier 180 grain TCJ hollow points and 180 grain lead flat nose (unknown manufacturer). My Lee Auto powder dispenser throws between 11.4 and 11.6 grains of AA9. From what I understand in this thread this is a mild load for the bullet weight. If not please let me know.

While I have the press set up I thought I would load 20 or 30 rounds of new Star Line brass with 200 grain WFNGC at 11.4 to 11.6 grains of AA9. I plan to get one of the Lee micrometer measure for a more precise charge level.

These rounds will be fired in my (new to me) G40 and possibly my G20.  Appreciate any comments from the learned folk here, positive or negative.

Thanks,

Nick

my most accurate load with the 180gr berry's FP is 12.2gr of No.9 @ 1150fps from my 6" RIA (not G40) ---though I did run them up to 13.0 grains for 1250-1275fps
you should be fine with the 11.4-11.6 gr with your 200 WFNGC ---I tried 12.4 gr of No.9 behind a 200gr WFNPB hi-tek coated montanna bullet this past week end and it gave me 1290fps but I was at my max for my gun with these bullets --- the grizzly 200gr WFN loads clock at around 1270 (they use longshot not No.9) and they are pretty much hit max pressure in my gun ----IMO around 1250 is a comfortable max with 200gr WFN hardcast bullets from 6" barrels

[Ridgerunner665]

After a larger sample size, the 1,305 fps average I originally recorded has dropped to 1,290 fps.

That is with 12.6 grains of #9 under a 200 grain XTP with a CCI 350 primer.

The 1,290 fps explains why I couldn't get the 190 grain CEB bullets past 1,285 fps...just not enough case capacity for that long bullet to get above that speed.

[The_Shadow]

Another thing may be case neck tension if using used cases, they can work harden some and spring back, using the slower burning powder will need a good case to bullet tension for full igniting of the powder charge...

[Ridgerunner665]

All new cases on the full power loads...

I only use fired brass for range loads in 10mm...150's @ ~1,400 fps from the 7 inch barrel...its a mid range load using Unique, Power Pistol, or Longshot.

[oldman]

I hear you.

Well I for one am impressed.  I'm a newcomer to the 10mm but a longtime .44 Mag fan.

The standard factory 240 gr .44 load was long catalogued at @1250 and about 750fpe...and usually out of at least a 6 inch revolver which is considerably longer than even a 6" semi-auto.  And fatter.  And heavier.  And holds 6 rounds.  And was reputed to break your hand. 

That a 30 oz factory semi-auto is in the same league at all powerwise indicates that we've come a long ways.  Of course revolvers have not stood still either so we have "super magnums" which fill the role that the .44 used to.

I can't see a lot of room for advancement in power past the .500 S&W but there is likely something left on the table for semi-autos.  A durable, packable factory .460 Rowland...   A high-pressure .50 counterpart to it...  I suppose the ultimate would be something like the .50AE (limited by grip size) in a duty sized gun.  All that's required is for someone to engineer it and enough others to figure out that they "need" such a gun.

[Ridgerunner665]

Gonna switch to the Nosler 200 grain bullet in my 10mm.

I'm tired of waiting on Hornady to make a run of the 200 XTP.... I called them months ago, they said they'd have them by the end of October... But they don't.

Tired of messing with them... So Nosler it is, I'd prefer a little tougher bullet than the Nosler... I wish they'd make their 10mm bullets in bonded form... Same bullet, just bonded.


On the bright side... I don't expect any issues with expansion at 100 yards (~1,075 fps)... From 25 - 100 yards I believe they'll be ok....it's that shot at 50 feet that worries me, from the videos and pictures I've seen, this bullet isn't quite tough enough for 1,300+ fps in every situation.

I'm a shoulder shooter, don't like tracking much... Not that I cannot do it (I have a really good blood trailing dog now too)... I'd just prefer to anchor them with a shoulder shot.... But with the Nosler bullets, I'm staying off the shoulder in all cases.

[Ridgerunner665]

12.6 grains of AA9 was a little light under the Nosler...

Went to 12.8 grains with the CCI 350, a little bit of a squeeze to get it in there, but it works without crushing the nose of the bullet.

1,306 fps according to my new chrono (using IR lights) which was double checked against a friend's Labradar...the Labradar came up with 1,307 fps.

The 5 shots and the average are at 15 feet from the muzzle.