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Gil,
I would not agree with you that "there are vast differences between these cartridges (7.62x51mm NATO and .308 Winchester.)." If there were, do you not think Frank C. Barnes would have stated so in his book, "Cartridges of the World." I agree that 7.62 Nato brass is heavier and pressures may be lower than for the .308 Winchester, but most good semi gas guns have adjustable gas pressure to compensate for any differences in pressure.
I have shot US GI 7.62NATO Ball, Tracer and AP out of my Indian SMLEs of 7.62x51mm or .308 caliber with no ill effects. I have shot a lot of US GI 7.62x51mm LC Ball out of my Remington 700BDL .308V heavy barrel with .575" groups of GI Ball at 100 yards.
I think "vast" is too harsh a description for interchangeable ammo . Does Midway advise customers NOT to shoot 7.62x51mm Ball out of guns chambered for .308 Winchester?
Adam
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Adam Helmer
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