Deleted member 1487
Apparently 60 ft/lbs of energy is all that is needed to produce a serious injury by a bullet and at 1000m the .276 Pedersen had over 374 ft/lbs of energy, which was more than the .30-06:At what range does the .276 fails to penetrate an helmet?
One use for MG is to saturate area targets with direct fire, which requires decent penetration at ranges from 500 to 1000m
If the .276 can penetrate an helmet at 1000m and be accurate enough allow snipers to make head shots at that distance you've got a capable round for all light infantry needs.
The 30.06 would probably still live for a while on AFVs
http://wintersoldier2008.typepad.co...n-were-pipsqueak-cartridges-in-compariso.html
By 500m the Pedersen round outperformed the .30-06 in terms of energy retention and accuracy. That was using the flat based 150 grain .30 round though. A heavier boat tailed .30 round would beaten the Pedersen round, but the M1 bullet was not used in WW2 and only after was a bullet like that used in a sniper role. So in terms of WW2 the Pedersen would have been a better round with much lower recoil.
That is that factoring in the AP variant of the .30 round though, I don't have data on the performance of that round.