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Posted: 12/22/2005 6:07:22 AM EDT
Probably been discussed before, but I'm too lazy to look.

Anyway, I've got a Glock31 (.357, I'm sure everyone here knows that, but I still have to go to the glock site to cross reference the caliber) and I know I can swap the barrel for a .40. What I don't know is whether I have to get .40 mags for it or if I can use the same ones I have. I compared the followers to a friends and saw they were slightly different.

I was going to wait a while, but I made the unfortunate discovery that the pistol is not partial to Selliet & Bellot. It was misfiring ALOT and frequently doing FTF's. I am told this is due to a hard primer. I just need a cheaper alternative for blasting away.
Link Posted: 12/22/2005 7:38:56 AM EDT
If it is just going to be a range gun then I would see how the .357 mags work. If they work fine then just use them. If they don't work then pick up a couple .40 mags. I believe there is a slight difference in the angle of the follower.
Link Posted: 12/22/2005 3:57:58 PM EDT
I have shot a few thousand rds of S&B without any problems in both 9mm and 40S&W. You might want to check that the firing pin channel is clean, dry and oil free. I find often times crud or oil is a cause of some failure to fire. Hopefully that will help narrow the problem to the hard primers.
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