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I'm not so sure about using Swifts,they have pure copper jackets and as such are higher in friction.Barrel friction in most calibers is a minor annoyance,in a 264 it can very easily be a primer popping headache.The 142gr 6.5mm match bullet is why Winchester built the 264,the 140 holds it velocity longer.You certainly won't have any problems with COL with a 700.To have 264 to last,keep it cool and clean.As slow as WC-872 and H-870 are,they are not clean burning.
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