S&W K frame .357's were thought to be THE ideal LE revolver, and if used with .38 +P, they weren't pretty darned good. But when shooting magnum loads, they were somewhat notorious for splitting forcing cones, which would lock up the gun...a less than desirable feature.
The forcing cone cracking is not a problem with 158 grain bullets. The 110's and 125's were the culprits in cracking forcing cones. I've got 2 M-19 S and I've never had a problem but, I never liked those light weight bullets.
