Long time listener, first time caller...Er, you know what I mean.
I have a M357A1 that I bought last December. After cleaning and lubing it I wanted to test it to see how far it would go before failing. I put 300 rounds of WWB, 60 rounds of Speer Gold Dot and 130 rounds of Lancer ammo through it. I had one round of Lancer ammo jam.
Then I tried shooting Double Tap ammo through it, both 115 gr. and 125 gr. I managed to get off a couple of rounds before the failures started. On some of the rounds a primer strike was visible. On others, just nothing happened. Sometimes, the trigger wouldn't reset, for some reason. If I removed and replaced the slide, I could get another round off, but then the trigger wouldn't reset again. At that point, I figured that the Steyr had reached its limit.
After cleaning and lubing again, I took it back to the range. WWB was again fine but the Double Tap ammo had the same problems. So, I don't know if it would have kept going had I not tried the Double Tap ammo.
This is my first handgun in 357 sig and I really like the round. But, I have a Glock in .40 S&W that I put 800 rounds through in a day, and it was still shooting fine. So, I have not yet decided whether the Steyr will be a carry weapon. It does feel like it's still breaking in, though.
Thanks to all for a great site. It has been very helpful.