I own five 45 ACP S&W revolvers dating from 1918 to 1989. Not a single one of them has "chamfered" chambers. I didn't know they were required. Heck, I've even competed without such modifications. Dang, who knew! (smile)

As far as I know Jerry M did his 12 shots in 3 seconds with a 45 ACP. That cartridge lends itself to reloading with moons much better than either 38 Super, 357 Mag or even 38 Special. The large diameter combined with the short length just feeds them in the charge holes.

Dave

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RSVN '69-'71
PCSD (Ret)