Quote:
Originally Posted by Nyksta
270 140 grain (sd=261) is more similar to 308 168 gr. (Sd=253)
Compare 270 cal 150 (sd=279) to 308 180 (sd=271) and that would be closer.
As caliber drops, you need a slightly higher sectional density to compensate for less overall mass.
I didnt look up the velocities or bc's of said bullets this time, but i already know that impact energies are extremely close at all ranges from muzzle to 500 meters and the drift is about 1% better for 270 So it pretty much comes down to whatever cartridge turns you on more
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You are correct i split the difference in the direction of favour of my argunent although it would have been slightly more accurate to compare with the 150 however i was not trying to propagate a simple wrongism