Many 7X57mm Mauser M93s and M95s had their barrels reamed out to. They will chamber those cartridges, but were actually intended to fire a much less powerful round made for the Spanish CTME rifles. They are sold as "7.62 NATO" or ".308 Winchester" - but that isn't true. I did manage to learn a bit on the 7.62 caliber converted Spanish '93s. I disassembled and reassembled it down to the tiniest of parts at least 100 times and got to know it pretty well. I later took it to my High School in my Junior year and making a stock for it was my Wood Shop project for that year. My first "high powered rifle' was an M-93 Carbine that I bought when I was 12 years old with lawn mowing money. That is a quick way at a distance to tell the difference. 300 Savage load data.Ĭlick to expand.Good call, Trap. If you run across a deal on one, don't be afraid to buy it if the locking lugs aren't set back. When you did get it opened, the action was junk. It started as a hard to open bolt, and progressed to not opening at all. 308W in one, and in the best case scenario, you caused locking lug setback. Importers advertised the Small ring conversions as, ".308W's". Small Ring 1916's were made into FR-7's, and the Large Ring 98's, were made into FR-8's. The NATO round pressures were higher than the max for a 7mm. The Spanish Small Ring Mausers developed for the 7x57 Mauser had a "operating" pressure of about 40,000psi, so Spain improvised, and came up with the CETME round. Spain had the 7.62 CETME psi), then the 7.62NATO psi), and the highest pressure round was the. There's three cartridges with the same dimensions, but loaded to vastly different chamber pressures. Spain converted existing arms as a stop gap when joining NATO.
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