Well I just got around to opening this thread. It is well noted the standard taper of a "Chamber" is about .005"/inch. Thus in the above scenario if you added an additional 5.9" of this same taper to a 3" chamber for instance, you would end up with an 8.9" "Chamber" & a .1" forcing cone, a very short & steep one. While certainly anything is possible, I cannot recall ever seeing a forcing cone with other than a straight (conical) taper. I believe what Jim addresed is actuality as it exists, not fantasy which could exist. Had Browning put some radically different cone in, such as a venturi or a parabola, then a discussion of such would have been well called for. Otherwise various lengths of cones with their necessary change of angle have been batted all over the field, for at least 75 yrs. All which would seem necessary would have been to simply state the gun has 2" cones & let the purchaser decide if that suits his fancy or Not. Some of us understand your input Jim.
