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If it's a 308 the your serial number should have a 3R in it made between 73 and 86 I know some where there is more info if I can find it then I'll let you know:)

What year? I really love the actions! Made the old way. The triggers are pretty impressive for there age too being fully adjustable.
Can't say I like the stocks but especially that roll over check...

Try his web sight for the history of your BSA BSA - John Knibbs International Ltd
There good for a rebarrel with the 308 bolt face your world is your oyster.
I'm just in the process of doing a BSA...