Problem with my Glock(I think)

dsv424 · November 20, 2009, 10:11 AM

Not sure what is causing this but I went to the range last night with my Glock 20 10mm to try some new reloads. Of the twenty that I shot 3 of them did not fire. This gun has been "Old Faithful" for me for 2 years, every time I pull the trigger it always went bang. Here are some pics of two that didn't fire and two that did. As you can see the primer was only lightly struck on the ones that didn't fire. Not sure if the reloads could cause this but I'm just not sure. Any suggestions would be appreciated.
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cslinger · November 20, 2009, 10:24 AM

Gunk in the firing pin channel slowing the striker down possibly.

I know very little about reloading but could those primers not be seated correctly or just happen to be a little harder then normal?

Foxbat · November 20, 2009, 10:29 AM

Pull the striker out, examine and clean its channel, examine the striker and its spring. Did the trigger feel funny on some shots? Could be early striker release.

Nowhere Man · November 20, 2009, 02:00 PM

cslinger is probably got it nailed. Wolf primers? They have a reputation of not seating properly.

Dave

cornbush · November 20, 2009, 02:47 PM

Are the primers seated down in the case further on the misfires? My dad had some problems with his 10mm Glock, the primer pockets would stretch just enough to let the primer seat a little deeper. The only other issue he had was crimp, but thats usually operator error.

goodspeed(TPF) · November 20, 2009, 04:42 PM

Primer depth is prolly off.

Alleykat · November 20, 2009, 05:56 PM

It's a lot more likely that the primers aren't seated deeply enough, than that they are too deep. First strike drives the primer in and seats it. If you refire the "duds", they'll probably work. Strikes on ones that did fire look pretty strong to me. However, it's always a good idea to blast out the striker channel every-now-and-then, leaving it clean and DRY!!

Sevens · November 20, 2009, 07:36 PM

One more thing to check, as unlikely as it may be... but it's easy to check:

Check the case length. If somehow, some way those case are shorter than spec, they'll sit deeper in the chamber and they won't get the full hit from the firing pin.

This is a real constant problem on my .30 Carb Blackhawk. If the case is too long, the cylinder locks up and won't turn either way and you have to pull the pin and remove the cylinder.

Cut the brass too short and the primer gets a tiny little nick in it and won't fire no matter how many times you let it fly.

I've never seen a piece of 10mm brass get shorter over time on it's own... none of mine ever has, but it's still easy for you to check and eliminate it as a possibility.

Alleykat · November 20, 2009, 07:47 PM

All straightwall pistol ammo I've ever shot resulted in brass that got shorter, including 10mm. The case length is irrelevant to the OP's problem.

Sevens · November 20, 2009, 09:14 PM

Well, .30 Carb isn't exactly straight wall... it's tapered. (so is 9mm) And it doesn't really get longer with each firing... but sizing it often stretches it. .30 Carb grows like rifle brass grows. It's a PITA.

I've never had a piece of 10mm go out of spec from either shooting or sizing either, and I've loaded and shot it since '92.

But if they were out of spec, it would likely cause light primer strikes.

gunney 67 · November 21, 2009, 08:24 PM

This is just a WAG, but it may be possible that the cartridges are under-sized enough by taper-crimping? that they are not head-spacing on the cartridge mouthes but are actually being held by the extractor, which would account for the light firing pin strikes. IE, the cartridge is moving forward by the firing pin hit until it is stopped by the extractor lip. Just a guess....

Alleykat · November 21, 2009, 11:47 PM

He's already been given the two possibilities. Maybe he'll be smart enough to take the cogent advice.

November 20, 2009, 10:11 AM	#1
dsv424 Senior Member Join Date: December 4, 2008 Location: Dallas, Tx. Posts: 266	Problem with my Glock(I think) Not sure what is causing this but I went to the range last night with my Glock 20 10mm to try some new reloads. Of the twenty that I shot 3 of them did not fire. This gun has been "Old Faithful" for me for 2 years, every time I pull the trigger it always went bang. Here are some pics of two that didn't fire and two that did. As you can see the primer was only lightly struck on the ones that didn't fire. Not sure if the reloads could cause this but I'm just not sure. Any suggestions would be appreciated. [IMG][/IMG][IMG][/IMG][IMG][/IMG]

November 20, 2009, 10:24 AM	#2
cslinger Senior Member Join Date: July 14, 2002 Location: Nashville, TN Posts: 2,045	Gunk in the firing pin channel slowing the striker down possibly. I know very little about reloading but could those primers not be seated correctly or just happen to be a little harder then normal? __________________ "Is there anyway I can write my local gun store off on my taxes as dependents?"

November 20, 2009, 04:42 PM	#6
goodspeed(TPF) Senior Member Join Date: January 19, 2009 Location: WI Posts: 1,162	Primer depth is prolly off. __________________ It's a trick. Get an axe. http://www.thepiratefleet.com/index.shtml

November 20, 2009, 07:36 PM	#8
Sevens Senior Member Join Date: July 28, 2007 Location: Ohio Posts: 11,755	One more thing to check, as unlikely as it may be... but it's easy to check: Check the case length. If somehow, some way those case are shorter than spec, they'll sit deeper in the chamber and they won't get the full hit from the firing pin. This is a real constant problem on my .30 Carb Blackhawk. If the case is too long, the cylinder locks up and won't turn either way and you have to pull the pin and remove the cylinder. Cut the brass too short and the primer gets a tiny little nick in it and won't fire no matter how many times you let it fly. I've never seen a piece of 10mm brass get shorter over time on it's own... none of mine ever has, but it's still easy for you to check and eliminate it as a possibility. __________________ *Attention Brass rats and other reloaders:* I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.

November 20, 2009, 09:14 PM	#10
Sevens Senior Member Join Date: July 28, 2007 Location: Ohio Posts: 11,755	Well, .30 Carb isn't exactly straight wall... it's tapered. (so is 9mm) And it doesn't really get longer with each firing... but sizing it often stretches it. .30 Carb grows like rifle brass grows. It's a PITA. I've never had a piece of 10mm go out of spec from either shooting or sizing either, and I've loaded and shot it since '92. But if they were out of spec, it would likely cause light primer strikes. __________________ *Attention Brass rats and other reloaders:* I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.

November 20, 2009, 10:29 AM	#3
Foxbat Senior Member Join Date: January 13, 2008 Posts: 367	Pull the striker out, examine and clean its channel, examine the striker and its spring. Did the trigger feel funny on some shots? Could be early striker release.

November 20, 2009, 02:00 PM	#4
Nowhere Man Senior Member Join Date: July 5, 2009 Location: North Port, FL Posts: 172	cslinger is probably got it nailed. Wolf primers? They have a reputation of not seating properly. Dave

November 20, 2009, 02:47 PM	#5
cornbush Senior Member Join Date: September 29, 2008 Location: The retarded place below Idaho Posts: 1,408	Are the primers seated down in the case further on the misfires? My dad had some problems with his 10mm Glock, the primer pockets would stretch just enough to let the primer seat a little deeper. The only other issue he had was crimp, but thats usually operator error.

November 20, 2009, 05:56 PM	#7
Alleykat Junior member Join Date: July 26, 2007 Posts: 3,668	It's a lot more likely that the primers aren't seated deeply enough, than that they are too deep. First strike drives the primer in and seats it. If you refire the "duds", they'll probably work. Strikes on ones that did fire look pretty strong to me. However, it's always a good idea to blast out the striker channel every-now-and-then, leaving it clean and DRY!!

November 20, 2009, 07:47 PM	#9
Alleykat Junior member Join Date: July 26, 2007 Posts: 3,668	All straightwall pistol ammo I've ever shot resulted in brass that got shorter, including 10mm. The case length is irrelevant to the OP's problem.

November 21, 2009, 08:24 PM	#11
gunney 67 Member Join Date: July 21, 2008 Location: boise idaho Posts: 77	This is just a WAG, but it may be possible that the cartridges are under-sized enough by taper-crimping? that they are not head-spacing on the cartridge mouthes but are actually being held by the extractor, which would account for the light firing pin strikes. IE, the cartridge is moving forward by the firing pin hit until it is stopped by the extractor lip. Just a guess....

November 21, 2009, 11:47 PM	#12
Alleykat Junior member Join Date: July 26, 2007 Posts: 3,668	He's already been given the two possibilities. Maybe he'll be smart enough to take the cogent advice.

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