That is about as good as it gets [for me] - early, almost like a converted pinfire - bar in wood action - bolted locks - fine scroll engraving - top lever, less common this early, [although I gather Westley Richards were very keen on the top lever] - and a rifle!!

Bore rifles, especially percussion, frequently vary by a bore size in the larger sizes

I wish you all the best in getting it shooting, but if not, it is still a part of firearms history and a very good addition to any collection - I am actively looking for a 10 bore - even a single, preferably ball gun or rifle

Best

TH44