hey i muzzleload for elk in idaho, and if i can't get one this weekend i plan on taking one down in the lengthy muzzle season. Any muzzleloader worth its salt with come with a replacement for the 209 primer that has a tool that unscrews the 209 out and loads the percusion one in. Takes about a minute! And then you are ready to go... one tip though is that you might want to rap the exposed cap area with saran wrap to keep water out otherwise when you pull the trigger you will get nothing more than a "phhshhfff...." and then some choice words from your mouth as the 7 by 7 runs a mile away. Good luck!