coop923
Member
I posted a while back about a Remington Rolling Block in 7x57 that I have, and safe loadings for it. Someone mentioned that there were excessive headspace issues with many of them. I remembered something about the fired brass, but I couldn't remember details. I came across some of the brass and thought this might be part of the headspace issue:
The shape of the chamber seems to be larger where the neck meets the shoulder, causing the brass to expand when fired. Fired brass will not chamber in the 7x57 Model 95 Mauser I have.
Am I on the right track in identifying the headspace problem?
The action is tight and the gun is in good shape; it seems I could remedy this problem if I re-chambered to .280 Remington/7mm Express. Am I right? Is the action strong enough for the increase in pressure from 7x57(SAAMI 46k vs 50K)? Or is the 100 year old metallergy not even strong enough to shoot modern 7x57 loads? I loaded starting loads for it many years ago and nothing more. I would think these would be safe. Any thoughts?
Edit: I'm thinking about shooting cast bullet loads at 1000-1600fps or so... not stopping big game -just fun stuff!
The shape of the chamber seems to be larger where the neck meets the shoulder, causing the brass to expand when fired. Fired brass will not chamber in the 7x57 Model 95 Mauser I have.
Am I on the right track in identifying the headspace problem?
The action is tight and the gun is in good shape; it seems I could remedy this problem if I re-chambered to .280 Remington/7mm Express. Am I right? Is the action strong enough for the increase in pressure from 7x57(SAAMI 46k vs 50K)? Or is the 100 year old metallergy not even strong enough to shoot modern 7x57 loads? I loaded starting loads for it many years ago and nothing more. I would think these would be safe. Any thoughts?
Edit: I'm thinking about shooting cast bullet loads at 1000-1600fps or so... not stopping big game -just fun stuff!
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