My first center fire rifle was a military 8X57, during the late 50s.
I used Win. factory loads in it. At the time, there was some discussion in magazines about the .318 dia. bullet and the .323 dia. bullet. It was confusing then, and is also confusing now, as to which rifles had which bore size.
There was something called a "J" and also a "JS". I think the JS was the .323.
If I remember, and this was a long time ago, Winchester factory loads used the .323 bullet, but the cartridges were loaded down, in the event someone fired a Win. factory load in a rifle with a .318 bore.
I think I remember reading, somewhere, that all 98s in 8MM had the .323 bore size, and that all 8mm rifles built before the 98 had the .318. As I said, it was confusing then, and it still is.
Or maybe it is simple, and it is just confusing to me.
