When the Ruger SP 101 revolver first came out, G&A magazine ran a torture test and had an article about it. They fired 50,000 (that's FIFTY THOUSAND) rounds of .357 through it, without a single mechanical problem. I think there were only 3 or 4 failures to fire, out of the same box of ammo, which they concluded to be hard primers. They used 5 staff people to do the shooting, and it took about a week. They concluded that this may be the strongest revolver ever built.
Regards,
Mannyrock