We need just a little more info jayco,
Ok,.50 cal T/C what? Hawkin? Lot's of brass? Plastic stock?Twist?
Bullets? Maxi? Minnie? Or Sabots? Ball?
Lubed?
Thanks for asking here,cause there are plenty that can/will help, but you have blanket questions.
It's like sayin, "I have a 12ga. shotgun what should I shoot?"
share sum more an we'll share back,,,,