440nuts

Hi Guys, I am new to this sight and could use some of your good advice. I am a reloader with a class 6 FFL and I load for our local votec's law enforcement classes. I am using winchester small pistol primers and am having about a 15% miss fire rate on the sig 226. the ammo works fine on the S&W 5906 and the glock 17. can you tell me if there is a problem with the firing pin spring or what. the guns have been cleaned and still have the problems. these gun were donated to the school from another school that closed down so I dont know how much they were used. it seems like I got a batch of hard primers. is there a heaver spring you can put in these pistols. thanks marty

bearone2

welcome from az.

KiowaKid  

Try federal primers a little softer.

KK

drshame

I am using win s p primers in my .357 sig reloads for my p226.
I am "uniforming" the primer holes before repriming, so I am probably setting them even deeper than if I didn't clean them out, imho.
My .357 sg cnversion upper has never experienced a mis-fire and has ignited 100% of my reloads..probably close to 2000 so far.
Could you have a batch of bad primers...do they fail to ignite in other guns/calibers, are the firing pins dirty or deformed at all?

Please let us know what you find. I have had win s r primers that misfired...but none in my pistol reloading so far.

440nuts

so far the only miss fires are in the sigs. they work fine in the other pistols but they have never had this problem before and it is with all of there sigs so they are saying it must be my ammo.the sigs are very used and they dont have a cert. armorer to work on sigs so it is easer to point at the ammo than to break down the sigs and see if there is a problem with the fireing pins or springs.thanks for your help.

fjgiie

Hi Marty,

There are two stronger springs that I am aware of.

This is a list of Mainsprings available from Top Gun Supply.

If a short Mainspring is used in those pistols then the Mainspring for the DAK would be stronger. It is a red spring.

The other short Mainspring is the "new" stock SIG Sauer Mainspring. It's stronger because it is new.

The older long Mainsprings are listed on that page and you can use the 34225688 from SIG or use the strongest long spring from Wolff near the bottom of the page.

texasgentleman2

Have they tried firing the ammo in another gun after it misfired in the sig? Have you inspected the ammo yourself for light strikes? I find it hard to believe all the sigs misfire.