Home Forums Reloading Handgun Reloading 357 sig.

Ok, here's the question. I'm and old fart. I've been reloading rifle, pistol and shotgun for over 60 years. I certainly don't claim to know everything about reloading after all those years. I have a 357 sig and shoot it in my Sig P226. While firing reloads that have been fired once or twice the gun fails for cycle about 50% of the time. It fires but doesn't cycle. What's going on? headspace? It is a bottle neck case. If so, how do I fix it? Any input and information would be most earnestly appreciated.

Thank you,
Hunter01