I recently acquired a .22 caliber percussion muzzle loader. I couldn't resist the novelty of it. What would be the best projectile to shoot from it, a round ball (without patch) or an air rifle pellet? I saw on line some air rifle conical type slugs that weigh 30 grains and appear to have a groove that could be grease filled. It could be a great squirrel hunting round. If anyone has any experience with such a small caliber gun please chime in. I would like to hear of your experiences with them.