Two M1916 7mm Spanish Mausers

Thanks imoore! Cheers, Don

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Originally Posted by jmoore

Late 7x57 FN ammo was likely loaded much hotter than the rounds designed for these rifles! Venezuelan contract probably for large ring Mausers and FN49s. Plenty hot! ~2900fps w/ a 139gr bullet, IIRC. SWAG 50,000psi or more chamber pressure- rather more than the original loads.

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Right you are, that Venezuelan contract ammo was too hot. Put some 140 grain Federal Power-Shok thru the rifle yesterday, ran fine. Thanks all for comments and advice, Don