Col.,
"Some of the 12's have 3" chambers" yep, they're not the usual. I've seen a couple. I am making an assumption here that the barrel sets would use the same monobloc dimensions for both the 12 ga 2 3/4" and 3"? Wouldn't be the first time a chamber got lengthened! My idea is not to abuse the gun with magnum loads. I could be wrong about this, would the recoil/pressure in a 3" steel 1 1/4 oz. load be all that different than for a 2 3/4 " 1 1/4 oz. lead load? Certainly these guns are OK with 1 1/4 oz. loads.
Chief
