I've noticed these before, but haven't really gotten around to 'fixing' the issue. You can see in these pictures, it looks like the gun is coming out of battery just a tiny bit early with my hot rod reloads. It looks like the tip of the striker is dragging on the primer for that half a millisecond or however long it's taking. And I'm getting a bit more primer flow off the top end of the primer as well with both the factory CorBon load and my own reloads. More pronounced with the reloads of course. Considering replacing the stock recoil spring in my G32 with a Wolff non captured rod and 20lb recoil spring. Since Glock uses the same 18lb recoil spring for compact 9x19, .40, and .357 models, I have no doubt a higher spring rate will slow the unlocking phase of the hot 357 sig. Just curious as to anyone else's experiences messing with spring rates in the .357 glocks. I know a lot of 10mm guys up their spring rates to slow unlocking with hot loads, and a lot of them claim to get a touch more velocity to boot. So, if you changed springs. How much more did you go? And what effect did that create or did you notice? Wolff offers 19lb recoil springs, all the way up to 24lb. Unless I get someone to convince me otherwise, I'll go ahead with the 20lb spring and see where that gets me.