Quote:
Originally Posted by BLUEDOT37
S&W started using the EDM/ECM rifling on standard production barrels in the middle 90s (1993-1995 ?)
Since the 646 came out in 2000 it's likely not broached rifling.
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If we assume (yes I know) that K22fan's premise is correct, it could very well have broach cut rifling. Doesn't the PC use broach cut rifling, as opposed to the production guns ECM rifling? If this is the case, to make just a few barrels to come out even with the number of cylinders on hand, it may have been more cost effective to have the PC just broach cut the necessary number of barrels. I know enough to never say "never" when it comes to S&W.
Adios,
Pizza Bob
Used mine for IDPA - retired now...
Not going to dig it out of the safe to look down the barrel - sorry.
PB