Misfires

ShootingNut · July 30, 2008, 04:48 PM

Anyone else want to "fess up" to having often misfires, granted this is a very deep subject taking into account firearm, condition of firearm, quality of reload or factory ammo.
Just sent in my 2 year old MP40 (S&W) for this recent problem. I'm actually hoping that they find it's the Striker Spring being weak, and not my "Quality Reloads". Now, I did not say anything about my reloading. I'm no expert by any means, BUT I have watched very carefully how my primers are seated.
SN

VaFisher · July 30, 2008, 05:41 PM

No pun intended but why didn't you simply try some factory ammo to see for yourself if the gun is the problem.

minnfinn · July 30, 2008, 07:10 PM

Are you using the same brand / type of primers as recommended by the powder manufacturer? Are you seeing a complete strike, light stike or no strike on the primer when this happens?
If it's a light or no strike, then there is something going on with firing pin mechanism. If a normal strike, then maybe you go a bad batch of primers and try another batch or another comparable primer from another manufacturers. On one of my revolvers even when I first got it, I had to switch to another manufacturer's primer that now consistently fires in this pistol. It may in my case been a strike force that was right on the edge and the Remington 2 1/2 I use in my .44 mag fires 100%.

amamnn · July 30, 2008, 07:48 PM

If you have not seated your primers more than .003" below flush, you might want to talk to a tech a SW. They are very helpful and in my experience, SW is very liberal about what constitutes a warranty repair. BTW, I have the same pistol and it shoots fine, as does my M&P 9. Neither one seems very picky about what I shoot in it as long as I don't under charge, which I did when I tried plated bullets.

Hawg · July 30, 2008, 08:27 PM

Never(knock on wood)had a reload misfire.

DWARREN123 · July 31, 2008, 05:37 AM

Never had a reload misfire but have had a couple of factory rounds misfire.

July 30, 2008, 04:48 PM	#1
ShootingNut Senior Member Join Date: December 27, 2006 Location: Wisconsin Posts: 1,475	Misfires Anyone else want to "fess up" to having often misfires, granted this is a very deep subject taking into account firearm, condition of firearm, quality of reload or factory ammo. Just sent in my 2 year old MP40 (S&W) for this recent problem. I'm actually hoping that they find it's the Striker Spring being weak, and not my "Quality Reloads". Now, I did not say anything about my reloading. I'm no expert by any means, BUT I have watched very carefully how my primers are seated. SN

July 30, 2008, 07:48 PM	#4
amamnn Senior Member Join Date: May 13, 2006 Location: WA, the left armpit of the USA Posts: 1,323	If you have not seated your primers more than .003" below flush, you might want to talk to a tech a SW. They are very helpful and in my experience, SW is very liberal about what constitutes a warranty repair. BTW, I have the same pistol and it shoots fine, as does my M&P 9. Neither one seems very picky about what I shoot in it as long as I don't under charge, which I did when I tried plated bullets. __________________ "If the enemy is in range, so are you." - Infantry Journal

July 31, 2008, 05:37 AM	#6
DWARREN123 Senior Member Join Date: January 22, 2006 Location: BETWEEN TN & KY Posts: 1,758	Never had a reload misfire but have had a couple of factory rounds misfire. __________________ Have a nice day!

July 30, 2008, 05:41 PM	#2
VaFisher Senior Member Join Date: January 24, 2006 Posts: 596	No pun intended but why didn't you simply try some factory ammo to see for yourself if the gun is the problem.

July 30, 2008, 07:10 PM	#3
minnfinn Member Join Date: January 17, 2008 Posts: 54	Are you using the same brand / type of primers as recommended by the powder manufacturer? Are you seeing a complete strike, light stike or no strike on the primer when this happens? If it's a light or no strike, then there is something going on with firing pin mechanism. If a normal strike, then maybe you go a bad batch of primers and try another batch or another comparable primer from another manufacturers. On one of my revolvers even when I first got it, I had to switch to another manufacturer's primer that now consistently fires in this pistol. It may in my case been a strike force that was right on the edge and the Remington 2 1/2 I use in my .44 mag fires 100%.

July 30, 2008, 08:27 PM	#5
Hawg Senior Member Join Date: September 8, 2007 Location: Mississippi Posts: 16,189	Never(knock on wood)had a reload misfire.