i have t/c hawkins flintlock .50 cal.1-48 twist. i use 80grs of 2f goex ,370 gr MAXI-BALL not MAXI-HUNTER for whitetail deer here in pa.no kick and most shots are under 100 yards and great groups .i get MAXI-BALLS for 6 dollars for 20 unlubed. i am going to shoot roundballs againfor practice but hunting it will be the maxi-ball 370 or powerbelt 295 with about same powder 80 grs or 90 grs.only my advice from shooting, no expert. longer bullets shoot better out of the 1-48.MAXI-HUNTERS are short and dont shoot well out of MY gun. MAXI-BALLS are longer and shoot great.take care