Ive had my CVA Mountain Pistol for years it does good on deer My son killed his first deer with it a 8 point buck . I have shot several deer with it I stuff 60 grains of 2ff in it and a round ball. Its good out to at least 45-50 yards never had any get up and run off yet.
I have one of the USA made ones I built back in the early 70's and it shoots about the same size group . It and its companion mountain pistol both 50's have several Deer to there credit over the years.The rifle was my first Black Powder gun I ever built or shot the pistol was the second.
I shoot them in my Pedersoli Kodiak 58 double barrel extremely more accuracy then I have been able to do with round ball in the Kodiak . Also use them in my TC Renegade 54 same results . Havent tried any in 50 cal yet guess I need to order the mold and see.