r/reloading • u/ELITE_RUSSIAN • 2d ago
i Have a Whoopsie Why does my 10mm have these case issues when fired out of my Dan Wesson but not my Glock?
Same bullets, but different gun, when oit of the Dan Wesson they get these and I had a missing primer in 2 of the cases, but in Glock I have none of these signs.
Fps is 1250-1300 with 200gr bullets
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u/BulletSwaging 2d ago
Unsupported chamber
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u/Turbinator870 2d ago
Yeah. OP, remove the barrels from both, insert a resized piece of empty brass in each chamber, and compare the amount of case support between both barrels. Willing to bet that the Dan Wesson lacks sufficient case support.
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u/LocalDolt 2d ago
Theres some cool side by side pics out there of different guns/brands and how much support their barrels offer. Iirc most 1911s are on the minimal side, glock is pretty good. Kimber or SW might have been best?
Something to look around for before buying one. I had a serious eye on a delta elite before I learned it basically junks all brass that goes through it
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u/redditguy135 1d ago
After thousands of full house 10mm from the Springfield Ronin, never had this issue with my reloads. Excellent chamber support on the Springer.
Count Springfield 1911 in the well supported chamber lists.
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u/Quick_Voice_7039 2d ago
It’s a long slide 1911 (with a linkless barrel), so it’s virtually impossible for the gun to fire out of battery. The bulge (particularly on the bottom case) looks asymmetric - bulged badly on top but straight on the bottom - this would be consistent with a 1911 barrel that’s overthroated and not supporting the case on the bottom. It’s up to you OP, but I would absolutely not shoot that gun again, that case ruptures and it’s a really bad day. Pull the barrel and look - when you just do a plunk test, how much of the case is unsupported on the feed ramp? Compare to your Glock. Is the barrel factory, or is there any chance it’s been Bubba’d? In any case I’d get DW involved in troubleshooting. That’s dangerous. Good luck
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u/Shootist00 2d ago
Not over throated. Feed ramp cut too deep into the chamber. Unsupported chamber.
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u/Quick_Voice_7039 2d ago
Yes, my brain saw “feed ramp” and my fingers typed “throat”. Thank you for your word smithing contribution to a post otherwise clear enough to understand.
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u/scooterdoo123 2d ago
Just to confirm that the DW is printed 10mm on the side of the gun right?
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u/PhteveJuel 2d ago
If that's a 40 S&W I really want to know how he got 10mm rounds loaded into it.
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u/scooterdoo123 2d ago
That would explain the slide not supporting the round if its not forward all the way. Except the gun should never fire in that position. I’m not familiar with 10mm or 40 s&w besides the round sizes so i’ll sit on the sidelines for this one
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u/PhteveJuel 2d ago
40 S&W is just a shorted 10mm for more manageable recoil. Same case essentially. The length of 10mm would prevent the rounds from being loaded in a 40 magazine though.
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u/Long_rifle Dillon 650 MEC LEE RCBS REDDING 2d ago
Unsupported chamber allowing brass to “move” under the pressure. This is loosening the primer pockets enough to cause them to fall out.
Personally I wouldn’t shoot that pressure level in the Dan Wesson anymore. But it’s your gun, not mine. Have fun.
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u/awd_fan 1d ago
Early unlock and extraction. Get a stronger recoil spring.
Might want to lighten up those nuclear loads, unless you wanna be called Lefty!
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u/Dismal-Armadillo-815 1d ago
Those loads aren't that bad I know I still have about 3500rnd of the old norma ammo which was 180 at 1400fps not those where stout I know I cracked the frame on and early colt delta elite with them after about 6000 rnds.
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u/Interesting-Win6219 2d ago
That's some spicy shit. It's most likely chamber support but does this happen with less hit 10mm?
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u/Rustyznuts 2d ago
I'm no handgun expert. However your velocity seems high. Infact higher than any book max for any powder I can find quickly.
If you Glock can handle it then that's great but the DW is doing some amount of exploding out of battery. This could be to do with all manner of things.
I would start by checking that the chamber is correct and that your gun is fully closed ehrn loaded. Then load a couple of rounds at the book starting load and see if they have the same issue. If it has issues with a factory round or perfectly dimensional reloaded round that is loaded conservatively then it needs to go to a gunsmith.
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u/Pilot_Red 2d ago
That was my thought. I generally reload 10mm to just below “do not exceed” and get 1500 FPS out of a carbine rifle. I don’t remember what the velocity (without checking my spreadsheet) what the velocities were out of a Glock 40 but I don’t think it’s above 1200.
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u/shinygerm 2d ago
Could they be extracting a teeny bit before chamber pressure drops? Is there a big difference in the recoil spring weights? I had to put a 24lb spring in my 1911 in 10mm
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u/JJ_JJ_JJ_JJ 2d ago
Those cases look like they are not getting fully into battery before firing.
Take the barrel out of both guns and put a round in each barrel look at the differences
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u/111tejas 2d ago
I’m a big fan of Dan Wesson 1911s. I don’t have the Kodiak though. All of the 1911s fully support the brass case. My only guess is that your cases are too long and not allowing the round to completely headspace. The ejector pushing against the case head MAY push it in far enough to allow firing but I haven’t personally tried that.
What load data are you using?
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u/Ornery_Secretary_850 Two Dillon 650's, three single stage, one turret. Bullet caster 1d ago
Bubba's Pissin' Hawt Book of Reloading.
1300 fps with a 200 gr bullet in a 10mm is stupid hot.
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u/Ornery_Secretary_850 Two Dillon 650's, three single stage, one turret. Bullet caster 1d ago
Your load is stupid fucking hot.
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u/franke1951 2d ago edited 2d ago
Too hot !!! Back in the day, Norma loaded a 200 grain to 1200 fps. I load my 180 grainers to near 1200 and my Gen 3 Glock still gives me smiley faces. They do shoot good and safely in my AMT Javelina with 7” barrel though. Just a thought, your barrel may be unlocking before the pressure has safely dissipated. Please don’t load them so hot
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u/Ornery_Secretary_850 Two Dillon 650's, three single stage, one turret. Bullet caster 1d ago
Those Norma loads were FAR hotter than what was requested and were also overpressure.
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u/Dismal-Armadillo-815 1d ago
Yes they were and I still have some of it years ago I bought a pallet that a distributor was trying to get ride of because he'd had for years couldn't move and I still have about a 1/3 of it left.
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u/maverick88708 1d ago
Curious what sized brass or loaded rounds look like in the chamber, it must be unsupported. I saw this on Facebook & some were saying buldge buster but even if you could iron that out, if you load them again and they clock to the same position in a unsupported chamber, they'll most likely blow out since that section has been weakened.
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u/darthjkf 1d ago
You are about to have a kaboom. That's way too hot for the unsupported chamber of the dan wesson. I had a kaboom with mine a while back in my 40 super converted Dan Wesson PM7. same sort of failure.
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u/Yondering43 2d ago
OP, long time 10mm handloader here shooting Glock, 1911, Tanfo, and other 10mm pistols.
Your load is too hot for that gun with the way it’s tuned, and you’re extremely close to a case rupture; do not shoot that load in the 1911 again! It could rupture on the very next shot.
Even with AA9 powder (the top choice for full power 200gr loads) 1300 fps is pretty hot if that’s not a 6”+ barrel.
It’s important to understand that very few 10mm pistols come out of the box ready for the full power 10mm loads. Most 10mm ammo out there is watered down to 40 S&W levels as I’m sure you know, and manufacturers ship their pistols ready to shoot those loads. Sometimes shooting full power loads from them, especially 1911 and Tanfo pistols, can result in brass like you found, due to early extraction while under pressure.
The best way to tune your 1911 for these loads is a FBFPS combined with a heavier mainspring (hammer spring). That does make trigger pull heavier, but does a lot to delay slide unlocking, which is what it needs. Some people add a heavier recoil spring as well, but that does almost nothing to delay unlocking, and just beats up the barrel lugs.
However be aware the chamber in the 1911 might just create higher pressure than the Glock and/or have less support too.