Sorry a bit late to the party but here goes. BSA made a range of sporting rifles on the Enfield P-14/17's first starting in 1929 with the Hi Velocity sporting rifle in proprietry cartridges .26 BSA, .33 (330 BSA) BSA and .40 BSA not many were made as the depression put a huge dampner on things.

Later in the period 1949-1953 they built the Models A-E with the E being the highest having new stocks and new BSA barrels. This is my Model E:-

Drilled and tapped for the P-H 6E or Redfield WCH70 receiver sights

Poor condition model C with P-H sight

BSA bored the oblong hole out round and sweated in a plug the D&T'd it and applied their trade mark.

Production stopped with the introduction of their new Hunter range of rifles on the action of BSA's own design. Hope you like it and it's of some interest.