Hi kailua custom,
Sorry to tell you this but BSA never used the name "Royal" on their sporting rifles. Yours is either a Hunter or a Viscount and in front of the serial number will be "5B". The 7x57 was the first of the medium length actions to be despatched from Small Heath in July 1955, the very first ones were in .222 Remington. As yours has the Mauser full length extractor then is was made prior to the spring of 1956 and is thus a Hunter model, so it's an early one. Please remember that all British guns are proofed at one of the proof houses so there is no such thing an an unfired one, if you have fired 8 rounds through it then it in all probabilty had 10 cartridges fired through it.
BSA made 2617 between 1955-1962 rifles with the 5B prefix and 389 with the later 5R for the CF2 range which I have one of. I also have a Majestic Featherweight Delux in 270 Win.
That is a nice rifle for sure and one I would be proud to own, however I am in no position to do anything about it being unemployed right now plus there is the hassle of exportation/importation to deal with ................ pity
