I shoot a 1842 rifled Musket with .685 735 grain minies, sevice load is about 75 grain of swiss FFFG and about 900 fp/s. Just for fun I treid it with 110 grain of FFG, I can tell you I dont want to shoot it again from the bench, nearly knocked me from the chair and it gave me some headache. :grin:
I dont see a problem shooting it out of a heavy double, on the bench it might be a problem. A conical in .73 would weigh about 800 grain+ I guess, to get performance you would need at least 100grs of swiss 2FG, or better 130-140.
I dont know, but it might be a problem to push that concial over speed fo sound, the conicals need to be very soft so the skirt expands well, but soft lead will disintegrate at too high velocity.Such a soft concial may be a problem on though bones I guess. :hmm:
The bavarian wallgun in the 1860's used .75 minie conicals, weight was as far as I can remember 825 grain or so. Looked like a german jager rifle on steroids. :haha: