An FR-8 MIGHT blow up, but has one ever done so?

[nalioth]

I thought F.A. Cetme was only a maker name, a european Winchester company - like that.

Yes, the top line says "manufactured by Toledo arms factory and the bottom line translates to "for the Fabrica Armas Cetme " (.

7.62x51 has a different case, albeit externally identical to 308 Winchester. "Different" being the key word there.

The "7.62 Cetme" is just another 7.62x51 cartridge loading, not a separate "distinct" cartridge.