First day with a Glock 20

dsonyay · May 04 2014 05:37:36 PM MDT

I had a great time today at the range.
Shot a brand new Glock 20 Gen3 SF

50 rounds of BVAC 180gr JHP. Zero problems. These felt like shooting hot rounds in my Glock 19.

And these (loaded by Shadow):

10 RDS of 156gr. Cast HP (painted Zombie yellow) 10.5 gr Blue Dot. Zero malfunctions.

3 rounds of 200 gr Gold Dot HP over 9.2 gr Longshot. The hottest load. Cases bulged to .434". zero malfunctions. These were the "loaded to Underwood spec rounds"

10 rounds of 200 gr hard cast Speer SWC TCBB with 10gr Blue Dot..
Approx. 1180fps / 619 ft-lbs. Zero malfunctions . no leading issues.

All above shot with factory recoil spring.

So first range outing was great. Everything worked. The reloads by Shadow were awesome. The difference between the factory stuff I started with and his reloads are dramatic and yet, very comfortable to shoot.

Can't wait to start reloading.

Pics:
The 3 "hottest rounds"

Where I found the max spot of the bulge"

4949shooter · May 04 2014 05:45:48 PM MDT

Congrats on the 20SF! ${$default_cool_smiley}$

And nice pics..

The_Shadow · May 04 2014 06:17:46 PM MDT

Another addictive 10mm shooter! Can't get enough of that sweet stuff! ${$default_tongue_smiley}$ Glad you enjoyed the ammo and performance levels, get those dies so you can jump on the handloaded 10mm band wagon! ${$default_cool_smiley}$

Nice to hear that my cast stuff didn't lead your barrel, I take great pride in my work! ${$default_grin_smiley}$

Gramaton Cleric · May 04 2014 06:21:39 PM MDT

Outstanding review. I have some Underwood that I'm saving for hunting purposes, and when I read reviews I feel confident in my own G20 that it will "hopefully" perform the same!

dsonyay · May 04 2014 07:25:25 PM MDT

Hi. And thanks for the kind words.

I was thinking the bulge would be biggest at the very bottom. As you can see from the pic the the widest part was farther up. From that point, the case narrowed again. I'm thinking those cases would resize easily with Dillon dies. Well, I hope so.

I'm very surprised at how "easy"shooting the full house 10mils are to shoot. I guess I was expecting mayhem or somethinh. Yeah, the Glock was bucking a lot more, but shooting accurate followup shots is not hard with practice. I would have no issues carrying hot loads at all. Matter of fact having 16 rounds of hot 10mm is very reassuring.

Yeah.. I can understand why everyone is so let down by most of the commercial 10mm loads. Those first 50 rounds I shot were nothing more than 40s&w.

What do you guys think of the Underwood Delta Elite offerings? I think these would be excellent self defense rounds without having to go nuke. Plus shooting at these slightly lower levels would be easier on the frame. And I'm thinking I can safely reload for this level for practicing. Or at least come close to it much easier.

Geeman · May 04 2014 08:52:02 PM MDT

Quote from: dsonyay on May 04 2014 05:37:36 PM MDT
The 3 "hottest rounds"

I now toss the PPU brass. I destroyed the G20 frame pushing less pressure than that center case.

http://10mm-firearms.com/reloading-10mm-ammo/g20-kaboom-update/18/

Greg

The_Shadow · May 04 2014 09:18:18 PM MDT

Greg, I was surprised too, I didn't realize I had loaded that PPU brass with that load (9.4grains LongShot under 200gr Gold Dot @ 1240 fps), probably loaded it before your gun blew up. That must have been one of the good pieces of PPU brass.

However, I do inspect my cases closely, each are pass-thru sized, then resized using the RCBS carbide die when depriming. Ever since you had the issue with the PPU ammo, I haven't loaded any fired cases to those levels.

Geeman · May 04 2014 09:32:17 PM MDT

I'm jush hyper sensitive, I guess.

I finally worked up the nads to fire a few of the new PPU rounds I have had since that day. They really are wimpy, aren't they ${$default_laugh_smiley}$ .

I stompped on the empties and lerf them in the brass barrel at the range when I was done.

Greg

Grulks · May 06 2014 09:41:30 AM MDT

I'm really new to this forum, are people having problems with factory PPU, or just reloads on their cases?
I dont have any left, but if its that much of an issue, I won't be considering it an option in a pinch anymore!

fanninland · May 06 2014 03:53:38 PM MDT

Someone can correct me if wrong, but pretty certain the problems are with reloaded PPU cases only. I don't reload (yet), but have shot a bunch of PPU factory loads out of G20 with no problems.

Geeman · May 06 2014 07:10:16 PM MDT

A bug fart generates more pressure than a factory PPU round. I doubt there will be a hazzard shooting them.

I will NEVER reload one again. You might get away with it, but I didn't. Cost me $150 for the new frame and another $70 in shipping to put Humpty back together again. I suppose you could load it to bug fart levels and do ok, but just don't load anything close to SAAMI levels.

Greg