Couple days ago I seated two .490 round balls in my Trapper pistol. I suspected that i might have but it was seated tight and i figured two 147 grain round balls are not even as bad as one 370g maxi ball so i pulled the trigger. 25g of 777 3f. it kicked pretty hard and I missed the steel plate I was aiming at but other than that no harm done.. Wish i was shooting paper as it would have been nice to see what kind of pattern ?