While the Cetme and the Nato rounds look alike externally.they differ greatly internally and while your rifle may not fail on the first few fired will fail.sooner rather than later using full powered commercial or mil-surp ammo. The CETME cartridge is loaded to the lower pressure. That would be originally at 45,000 PSI and the. 308 Win/7.62 Nato cartridge The latter is loaded to a chamber pressure far in excess of what the action was designed to handle.
You should be able to download a freebie at However, The FR 7 Special Purpose Rifle was an Arsenal conversion of a model 95 small ring Mauser that was original chambered in the low pressure 7x57mm Mauser round(ca 1950) That conversion was to the cartridge known as the 7.62x51MM CETME cartridge WHICH IS NOT THE SAME AS THE. A good basic manual for these is avaialbel from the NRA publications division, both as an individual firearm or in a group manual.The NRA Guide to Rifles and Shotguns.Firearms Assembly 3 will take you thru it.
Just run a Google search on Mauser and with a large fresh pot of coffee.sit and read for a year or two.these rifles.in all their incarnations are the most popular in the world.
