I have now had the opportunity to examine the rifle (no 1292)properly- The original caliber was 461 Gibbs, the barrel 33" Metford no 1325. At some stage someone must have bored it out to 16g and modified the extractor to suit. Unfortunately the original sights are missing. It has provision for a venier type sight on the tang which seems to indicate that it was a target rifle. I reckon lining the barrel and then possibly going for the 577/450, which is very popular here in S.A. The exterior condition of the barrel is good and has a very attractive profile/look.
Regards,
Charl