roundball
when we got started into muzzleloading,me and a couple of my friends shot a few thousand rounds. we were buying every new mold that came out at that time..the best performance of all the rounds we shot,the most consistent out of our thompson center guns was the maxieball for tight grouping...sight in 50 yards benchrest,shoot groups of 3's and cloverleaf them...tried the maxiehunters at targets,we get a flyer every now and then...as a club,we would kill an average of about 30 deer a year...before hollowpointing the maxiballs (we would butcher our own deer) we would get some that were mushroomed and retrieve some that you could stick right back into the muzzleloader and shoot,amongst retrieving other projectiles from the deer..22's,buckshot,birdshot,broadheads...when we started shooting tc's booklet said do not shoot plastic in their barrels...now you can shoot al the plastic that you want..i hunted with a hawkins that would shoot maxiballs excellent and roundballs so-so...my buddy hunted with a renegade that shoots maxiballs excellent as well as roundballs excellent,as a matter of fact,i think you could dump anything down the barrel and it would shoot excellent,one of those factory freaks.