Home Forums Hunting & Shooting Handguns What would cause this type of FTF?

I have a DA/SA Sig P232 .380 that I load for. I'm having trouble with the last batch of ammo I loaded for it where about every 3rd or so round will not fire on the first trigger pull, but will always fire on the re-strike (2nd pull). Examining a round that fails to fire on the first pull usually shows a very faint firing pin indention. All the the rounds fit in a go/no-go gauge, though some of them I have to tap the gauge on the bench for them to fall back out. Bullets are 90 gr. Sig V-crown.

Any ideas what might be going on?

Maybe the primers aren't seated deep enough?

I'm about ready to say eff-it and go back to a danged revolver!