I have a 50 cal. thunderhawk it my go to gun still caps with number 11 primers.I can say it can out shoot itself some say it was t/c best inline.
I find 85 gr. of triple 777 or 3F goex 110 gr. it will shoot out standing.I favor the buffalo SSB 325-375 boat tail HP bullet sabot.I also shot the precision 300 Gr. silver lighting with 85 Gr. of triple I yet to see any deer walk away from this load.
The rifle is super light and can carry all day in the woods.