The real beauty of a muzzleloading double rifle, is the speed with which one can test various loads in regulating the rifle.
: I don't see timing between shots as being very critical, but the rifle should group closely for 3 or 4 shots, when barrel heat might effect regulation.
; Bill - In regards the ML double, would not increasing the charge & therefore the recoil not casue the barrels to shoot apart and thus reduce crossing? Or - is that bassackwards.