Why are barrels so hard to find for my Bisley 45 ? All I want is to replace my 7.5 inch tube with a 4.625 inch tube without paying through the nose. I tried Numrich and a few gun auction sites. Even Google was no help! Such a common gun, I'm dumbfounded. Secondly, I've owned and shot many a Blackhawk in 45 colt, including vaqueros in 3 different variations. All of them had fluted cylinders. So why is it so hard to find a Bisley (not the vaquero) Blackhawk with a fluted cylinder? Most common ones all seem to have 7.5 inch barrels and non fluted cylinders. I'd love to be able to switch my cylinder for a fluted one, but I'd probably be better off just buying a Blackhawk and fitting it with a Bisley grip frame (I like heavy 45 colt fodder).