Originally Posted by
3M-TA3
I'd say go with the 6.5 CM as long range ballistics are better than with the 308. The 6,5 140 gr ELD match from Hornady is supersonic out to 1300 yards as opposed to 1000 for the Federal 175 grain MK match. Energy is about 1100 foot pounds for each at 500 yards. Before that the 08 has more energy, and after that the 6.5 is better. The 6.5 shoots flatter and is less susceptible to wind.
The main thing that would make me prefer the 308 would be if I had others in that cartridge and didn't want to add a new one, especially if I already had bullets, brass. and powder.
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