FR-8s can handle .308Win, 7.62x51mm machine gun ammo and 7.62 surplus ammo, the latter two being the same thing.
I would stick to standard Nato rounds. I shoot 7.62x51 out of my FR-8. I know there are differing opinions and articles written on either side but std Nato is available.
Well said.... The FR-7, on the other hand, is a modified 1893 action. Century arms did some rather extensive tests with these and their 1916 rifles that were also converted to .308/7.62x51. They found that these guns were safe with .308. That being said, I would still be leery of using it often, if at all in any of the pre-98 mauser actions. Most of them were originally designed to have a working pressure of about 40,000-42,000 psi. .308 Win works at 50,000+ psi. Your FR-7 or 1916 rifle may very well shoot just fine with the hotter commercial loads, but why stress an old gun? Why risk youe eyes or more? Either use the nato loadings, or roll your own down a bit to the nato round levels. ...
I am new here, so sorry if this has been beaten to death already. Here is my humble $0.02.
The FR-8 is a 98 mauser action. It can handle .30-06 and 8x57 with ease. If the gun is chambered for it, of course. .308 is no problem for one in good condition. You can shoot store-bought .308 until the cows come home (assuming all that blazing away doesn't drive them off...) and not have any problems. I do it all the time, and I am not the slightest bit worried about it. Shooting the .308, that is, not herding cattle with gunfire...
The FR-7, on the other hand, is a modified 1893 action. Century arms did some rather extensive tests with these and their 1916 rifles that were also converted to .308/7.62x51. They found that these guns were safe with .308. That being said, I would still be leery of using it often, if at all in any of the pre-98 mauser actions. Most of them were originally designed to have a working pressure of about 40,000-42,000 psi. .308 Win works at 50,000+ psi. Your FR-7 or 1916 rifle may very well shoot just fine with the hotter commercial loads, but why stress an old gun? Why risk youe eyes or more? Either use the nato loadings, or roll your own down a bit to the nato round levels. Anything that you are shooting at will never know the difference. Targets or deer won't care.
-Mb