Use the #11 caps on the Crockett. I don't have a Crockett, but I do have 4 .32 caliber rifles,(3 percussion and one flint). The .32 is a great small game round and inexpensive to shoot. In the early summer squirrel season I use only 10 grains of 3f for dime sized accuracy out to 25 yards. Can't see the squirrels much beyond that when the leaves are on the trees. The down side to the .32 is that the little balls are sometimes difficult to handle if you are all thumbs like me. I use a loading block to solve that problem. The little balls are also susceptible to wind drift if you try to stretch out your shots much beyond 40 yards. Many complain that the small bore is more susceptible to fouling, and that may be true, but it has always been my practice to swab the bore every 3 shots whether needed or not.