I've heard a bunch of stuff about which ammo to use in this gun. It has the old .317 I can't remember if that means it's An 's' or a 'J', I used to just buy fatory 8mm[ which was mid-way between s and j. But now I understand all 8mm is .323. They [ammo manufactors] made their 8mm to safley fire in both the S and J version years ago, but the last time I bought some 8MM, I had a hard time openning the bolt. Classic example of too high pressures. But before that, the gun handled any COMMERCIAL 8MM I put in it. I have to say I only shoot the gun on rare occasions and the last 2 boxes of ammo were at least 15 years old. They were Remington 8MM. The new box is also Remington. Am I done with this gun?
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mauser 'commision' 1888
- Thread starter buckhorn
- Start date
I am not sure any .318" bullets are available, though you might be able to get away with using .323" bullets in a light load, as the U.S. ammo makers did. But there may be another answer. The Germans converted a lot of those rifles to shoot the new 7.9 (or 8x57JS in civilian terminology). They did not rebore or re-rifle the barrels.
What they did was simply to run in a new chambering reamer. That expanded the chamber throat and gave the new round a place for the larger neck to expand. If the case neck can't expand (and it can't with a .323" bullet in the old chamber), pressures go very high very quickly and trouble can result. Firing bullets a mere .005" larger in diameter won't cause problems; a case neck that can't expand will.
Jim
What they did was simply to run in a new chambering reamer. That expanded the chamber throat and gave the new round a place for the larger neck to expand. If the case neck can't expand (and it can't with a .323" bullet in the old chamber), pressures go very high very quickly and trouble can result. Firing bullets a mere .005" larger in diameter won't cause problems; a case neck that can't expand will.
Jim