I also have a Bobcat and it shoots just fine. Definitely use loose powder. I use 2F Goex powder (but am going to try switching to Pyrodex P (equivalent to 3F)) and a .490 roundball. It is a surprisingly nice shooter. I have taken many rabbits (must be a head shot) and just general shooting. If you don't load it to hot it is a pleasure to shoot. It will take up to 100 gr. powder for a big game hunting load and I have tried it and it will kick, but not all that bad. I've never had a problem with ignition with the 2F Goex. It touches off just fine as long as you keep the nipple clean by running a thin wire down the hole after each shot. It is a nice rifle. Enjoy.