Big Dog
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Join Date: Mar 2002
Location: Tallahassee, Florida
Posts: 13,377
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It is a myth. The commercial market CETME rifle is based on the CETME Modelo-C - designed to use standard NATO 7.62X51.
The Spanish 'light loads' were an early development that fizzled. All their battle rifles used the standard NATO load.
This has been confirmed on the Gunboards site by Spanish ex-troopers who used these rifles.
The CETME has the ability to operate with a wider variety of loads than many gas-operated weapons can. The only weak point is that the cases need to be mil-spec. The thinner commercial cases can be ripped in half.
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So, how about a little PROOF? Barnes Cartridges of the World catalogs any number of obsolete, and limited production military rounds. So, where is the CETME 7.62x51 in there? Sounds more like an experimental cartridge that never made it into type classification, if it even got that far. Surely, one of these experts has a sample for everyone to view, if it exists.