For those of you, in States that, MUST use a lead conical (or round ball) without Sabots,..we have found that the NO Excuses 460 grain lead conical shoots very well with, Black MZ .
We were shooting 75 and 80 grains of Black MZ with small felt wads under the bullet (NOTE: by WEIGHT, on a scale,....NOT Volume) the Kick is STOUT but manageable with a slip on Limb Saver !
I Tried 85 grains (actual WEIGHED charge) but, the KICK,..is FIERCE,.. in a 6.5 lb gun !!
80 grains chono'd approx. 1,200 FPS in our 22" bbls and penetrated thru 6 milk jugs full of water after going thru a 1" OSB (housing floor) board !! Bullet "nose" expansion to 3/4 of an inch, no loss of weight that we could see !
We will go back next week and focus on the lighter loads,..for accuracy as, we just got done "tuning" my trigger for a shorter sear engagement,..I was flinching a tad and got 2 shots "touching" several times but never could get a real good 3 or 5 shot group due to trigger pull length !!
Did I mention I was shooting "No Excuses" Bullets,..LOL
My son shot a sub 3" (100 yard) group with a,.. peep sight !
For details about the guns and priming we use you can look at my previous "post".
We weigh all our charges and put them in tubes before, the shooting session begins, to cut down on the extreme Velocity "spreads" that you get from measuring by Volume as noted per the article in North Amer Muzzle loading's trial of Black MZ see,..
http://www.namlhunt.com/modernmldata4.html
I hope this helps all you folks trying the New Blk MZ !