I've collected quite a few milsurps, none of which has the power of a magnum. Was there a commercial bolt action rifle used for dangerous game before the Winchester Model 70? The H&H magnums were a caliber option in the Pre-War Model 70's and I expect many were chambered in the 300 & 375 Magnums, but don't know how many. I see more 300's for sale than 375's. I'm thinking of each, but mostly in keeping the 375 as a collectable. I doubt I would ever hunt with it. Probably a Pre war, or 1950 and earlier being the most collectable. Are there any records of how many Magnums were made Pre 1950? or Pre 64? Are there educated guesses in books, if not actual records?

Thanks