Hi guys, new here and just chiming in on my favourite topic
Looking at the numbers comparing .308 and .303Brit, (Military loads) you find the lighter .308 pill getting out of the gate a bit quicker, mainly due to developments in case design and propellants.. where the heavier .303 projectile carves a slightly higher curve, at about 1000yds their speeds have converged and the .303 actually has more retained energy.
Doesn't matter, really... a CBM hit from either at that range will seriously ruin your day.. the whole point here is these days you are more in danger of having dirt flicked into your eye by bouncing bullets at 1000yds than you are of skin breaking wounds. Ha! .223 why would you bother?
There are some things that money cannot buy... For everything else there is Mastercard