The twist on my .54 WMC is 1 in 48", a compromise that shoots either prbs or conicals. However, with the 21" barrel you can't take advantage of the conical's range superiority, so it's really a prb gun.
I shoot 80 gr ffg real black, .530 rb with 0.018" patch.
The gun has a hooked breach and the barrel is easily removed for cleaning once the wedge is removed - just lift from the muzzle end. The breach plug is not removable.
