Failure to fire

[bonzaiii]

I recently began reloading .40 and have been having great success. Yesterday I finished off the bullets I had been using and began using a different bullet. Today when I went to the range I had several FTF. I tried them in a couple of different guns (Beretta px4 storm, Sig pro 2022) with the same results. I also had a couple of FTE, but I dont know what would cause a failure to fire other than a bad primer but why would I suddenly have bad primers? Any suggestions or ideas ?

[rsrocket1]

Did you shoot them a second time? If you didn't seat the primer all the way in, they won't go off. Sometimes they go off the second time. The first strike seats them in the cup, the second time they go boom.

Do you have any left overs? Check the primers in the unfired ones. Usually you can tell just by feel.

[wtkaiser]

It's the same primer in both batches? Did you clean the pistol? You might have a "gunked-up" (sorry for the technical talk) firing pin. And are you sure you didn't leave the ammo underneath the 1971 Spitfire and get it covered in oil? (PS, Guess what car I own!)
Only the first two questions are serious ones, if that needed explaining.

[Chief-7700]

My bet goes to primers not seated to the proper depth.

[ojisan]

^ Yup.

[wtkaiser]

Of all the thousands of rounds through the years that I have reloaded, everything from the mildest .38 special to the hottest 7mm Rem Mag and .45-70 (my shoulder STILL feels that one!), I never once shallow-seated a primer. I've done a few other things, but never sinned like that yet. I suppose it's only a matter of time.