I recently bought a Spanish LaCoruna 1951 in 8 mm caliber. My questions are: Is it the same thing as the M98 German designed large ring, or some other odd ball configuration? Also, the barrel is pretty much gone. It was stored in a shed or something, outside was kind of rusty, inside looks like forty miles of bad road. I've cleaned and swabbed on it for a couple of weeks, it still looks rough. Will other military barrels fit, or will I be better served by just using the action to build a 35 Whelen? I've wanted one of those for a while, any way. It is kind of sad really, the wood, etc; is in decent shape, and all the numbers match. I hoped the barrel would clean up, but it is really pitted, so I'm kind of on the fence as to what to do. Advice?