That is a nice rifle, quite early (lovely percussion type fences, non rebounding bolted locks) and rose and scroll engraving IMHO worth the work

I had a percussion Cape Rifle resoldered (Rib well away, all resoldered and rebrowned) for GBP500 [$850] a couple of years ago, but obviously no regulation issues

Birmingham Black Powder proofs and a relatively modest power cartridge, Daryl's advice as always good re: the lighter bullet

Good luck whatever you choose

TH44