You shouldn't be limited to flintlock only.I believe there are inlines that can use regular primer caps. Also, you could look at the sidelock percussion (what I used this year for my elk). A .54 Percussion with a 430-475 grain bullet will put an elk flat for sure!! I got mine with a .50 caliber percussion anda 370 grain bullet this year. That was plenty, and I hope to get drawn next year so I can try it again!!