BSA, it is a 1950 model. How can you tell by seeing it? I can tell you it likes 45 grains of Imr 4350 behind a 100 gr sierra GK. It grouped those a hair over a 1/2". I loaded up some 100 Nosler BT and some 115 gr partitions, going to see how those do
About the only complaint I have is the trigger. Going to have to look at that when I get time.

Eric.