BSA originally remanufactured Lee Enfield 303s & Enfield P14s & M17s after WW2,in the mid 50s they introduced their purpose built sporting rifles, the first was called the Royal series in the USA & came in short medium & long, ie 223, 308 /7x57 & 30-06 lengths. Dovetail scope mounts with Parker Hale rings These had a Mauser type claw extractor & blade ejector & were a proper controlled feed rifle. (The Med & Long actions used M17 extractors)In New Zealand these were referred to as Hunter rifles & are one of my favourites, I have several,I must be one of Nakihunters small group.

These were followed in 59 by the Majestic action, same receiver with dovetails but clip extractor & button ejector. Still a very trim & workman like rifle & still popular among those who know out here. Medium & Long action only, the Majestic was followed by the Monarch in mid 60s, changes to triggers & safeties & using Rem 700 screw on scope mount bases. These were in turn followed by the CF2 rifles in the late sixties, detail & cosmetic changes in the main & still, from what I could see from a visit to the BSA factory in Birmingham in 1984,made on the same machinery as my Hunters. It was not too long after that that BSA ceased to make centrefire rifles. I believe the tooling was sold to Pakistan. Herters U9 rifles were also made by BSA & were basically as for the regular BSAs but less well finished. Can you figure out from this which model you have?
Steve