most all B/P guns are different, it takes some range time to get your best results.
In my testing of my two guns,( CVA Magbolt 150 , 45 cal. 209 primers) I found that with the 150 grain powder, the bullets went wild.all over the target.I then droped to 100 grain pyrodex and things were good.I have taken many deer and a few hogs and all have preformeed great.all but two were pass through with large exit holes and great blood trails.the two were one neck shot at 10 yards and one down through the back at 10' both were dead at the impack.

just have to shoot it as said,with different loads and different ranges.thats the fun of a new gun or new loads.punching paper and blowning smoke.