I have a small ring Mexican Mauser rebarreled to 243. When I was young and dumb I thought that I was smarter than the publishers of reloading manuals. I pulled some bullets from goverment issue 308 Match ammo. I resized the cases to 243 without reaming the necks. Next, I interpolated the salvaged powder charge and I seated 100 grain Sierra in the cases. I was shooting under 110 degree desert sun from the hood of my car. The first two rounds went off fine; however the third blew the stock off of the rifle and froze the action. The late P.O. Ackley replaced the bolt and I'm still shooting the rifle to this day. I know that I was foolish but my experience shines light on how strong a 98 Mauser is.
Clifford L. Hughes USMC Retired