Any 10mm love here?

[GTG]

Is your kkm barrel the conversion version for a g21 or do you have a g20 and wanted a tighter fit? I've read that the g20 is a heavier slide.

Its a g20. I wanted a fully supported barrel to minimize bulging brass with hot loads. I havn't ever had a feed problem with it.
There are alot guys are putting after market 10mm barrels in the g21, and I havn't heard of any failures. Some guys also change to a 20 or 22lb guid rod spring.

 

[Jeremy1066]

+1 for Underwood ammo. They load them HOT and are nicely priced for someone that doesn't reload (me).

 

[22rssix]

G20 owner and fan here.

I got my G20 on a because I already had my fill of 9mm and 45acp handguns and was looking forsomething different. I had only shot a few rounds of 10mm before that.

now I am hooked. I just need to start reloading. I have a buddy who cant get enough of it. Everytime I visit he wants me to bring it so we can go shooting. LoL

My only option now is to start reloading since I am out of ammo. LOL.

 

[Merrixs]

Check this link out for 10mm ammo comparison. This guy tested all of these different rounds from the same stock G20 and put all the data in a spreadsheet. He also has a youtube channel showing all the chrono videos.

http://www.facebook.com/l.php?u=htt...JjdFhsRUcwSHRUcktCMmhOMTVFa25xa1E&h=RAQGoIrqB

 

[Jeremiah]

I have a 610 3-7/8", a g20,

I plan a witness hunter or elite match, a g29, And either a delta elite or a 5" bobtail Dan Wesson, I also want to build a 10mm carbine off of an enfeild action that takes g20 mags.

 

[Excalibur]

When they make the Gen 4 Glock 20, I'll get it.

 

[GTG]

Check this link out for 10mm ammo comparison. This guy tested all of these different rounds from the same stock G20 and put all the data in a spreadsheet. He also has a youtube channel showing all the chrono videos.

http://www.facebook.com/l.php?u=htt...JjdFhsRUcwSHRUcktCMmhOMTVFa25xa1E&h=RAQGoIrqB

The nderwood looks like they do pretty good at meeting their claimed numbers.

 

[Jeremy1066]

Anyone else notice that almost every Double Tap listed is about 200fps lower velocity than advertised? I knew they were misleading, but really?

 

[BoilerWes]

When they make the Gen 4 Glock 20, I'll get it.

I have read multiple Internet reports and hopefully they will be here by the end of the year.

Anyone care to comment on the differences in shooting the G21 vs G20?

 

[shibumiseeker]

I have read multiple Internet reports and hopefully they will be here by the end of the year.

Anyone care to comment on the differences in shooting the G21 vs G20?

Not a lot of difference. For the same types of ammo in each caliber there's a little difference but not what you might expect from a round averaging 50% more energy.

 

[teddy12b]

I love the 10mm, but when I can buy 9mm factory for less than I can reload full power 10mm I just had to go back to the 9mm. If they ever allow the 10mm I'll get back on the wagon.

 

[Valvestate]

Its a g20. I wanted a fully supported barrel to minimize bulging brass with hot loads. I havn't ever had a feed problem with it.
There are alot guys are putting after market 10mm barrels in the g21, and I havn't heard of any failures. Some guys also change to a 20 or 22lb guid rod spring.

N00b here, can you guys explain what a fully supported barrel is vs partial? Does it mean the chamber doesn't completely hold the casing to the rim?

 

[shibumiseeker]

N00b here, can you guys explain what a fully supported barrel is vs partial? Does it mean the chamber doesn't completely hold the casing to the rim?

Look at the picture in post 15 of this link:
https://www.indianagunowners.com/forums/ammunition_and_reloading/175965-1911_guys_riddle_me_this_brass_issue-2.html
to see the differences between fully supported barrels and those that aren't.

From left to right in that pic are a stock G20 barrel, a LoneWolfDist Glock 20 barrel, and a Colt Delta Elite 10mm barrel.

Partially supported barrels help shorten the distance a slide has to cycle to feed reliably at the expense of case support.

 

[sjstill]

G20 & 29, plus a few Dan Wesson 1911's in 10mm, including a Global Hunter (6" longslide). I've never seen another GH out there.

I let some of my buddies shoot the 29 with Double Tap 200gr bullets, might have hooked one of them....lol

eta: I've also been fortunate enough to fire 2 FBI HK MP5/10 mm's. One was 3 shot burst, the other was full-auto. Very controllable and accurate.

 

[Jeremiah]

Anyone planning to pick up a gen 4 glock 20?

 

[shibumiseeker]

Anyone planning to pick up a gen 4 glock 20?

As soon as I find one...

 

[Hohn]

I knew you would be here



I believe the FBI/LEO opinion was that 10mm had too much recoil.

I think this is a myth that has grown up around the 10mm.


The reality as far as I can tell is that the FBI never tested the full-power 10mm (at Norma pressure levels).

The "FBI Lite" is the only 10mm version that was tested and adopted. I think the "too powerful" aspect is just some macho enhancement from my fellow 10mm fans.

The FBI spec'd the '10mm lite' not because agents couldn't handle it, but because they had actual data that said a subsonic round was desirable. Moreover, they specified a muzzle velocity of 950fps because in FBI testing, higher velocities had LOWER penetration, and the FBI thinks penetration is the most important aspect of wound ballistics (and is why the IWBA takes a similar position).

So it's a myth that the FBI originally spec'd a full-power 10mm and then downloaded. The reality is that the initial FBI spec was a 10mm lite (aka .40 SW) right out of the gate, because the FBI's data said they didn't want or need the extra power of the full house 10mm.

 

[Jeremiah]

I think this is a myth that has grown up around the 10mm.


The reality as far as I can tell is that the FBI never tested the full-power 10mm (at Norma pressure levels).

The "FBI Lite" is the only 10mm version that was tested and adopted. I think the "too powerful" aspect is just some macho enhancement from my fellow 10mm fans.

The FBI spec'd the '10mm lite' not because agents couldn't handle it, but because they had actual data that said a subsonic round was desirable. Moreover, they specified a muzzle velocity of 950fps because in FBI testing, higher velocities had LOWER penetration, and the FBI thinks penetration is the most important aspect of wound ballistics (and is why the IWBA takes a similar position).

So it's a myth that the FBI originally spec'd a full-power 10mm and then downloaded. The reality is that the initial FBI spec was a 10mm lite (aka .40 SW) right out of the gate, because the FBI's data said they didn't want or need the extra power of the full house 10mm.

any solid links to back that up? I'm not doubting you, I'd just like it for reference.

 

[shibumiseeker]

any solid links to back that up? I'm not doubting you, I'd just like it for reference.

Yes please.

 

[flightsimmer]

I don't have any links but I do have a printed article from Shooting Times Handgun Quarterly (haven't found a date on it) entitled "The real significance of the FBI's Ammo Test" by Charles E. Petty and it is six pages long, starting on page 39.
The report of the FBI's ammo test was published in 1989 and in the first half of 1990 they tested 16 more rounds.
It would be an interesting read for you if I could find a way to post it on this forum. Maybe it can be found in the Shooting Times Achives.
I've got copys of everything 10mm from the early years before their was any published data in the loading manuals. Happy hunting.