04-23-2014, 06:42 PM
LRRPF52 Wrote:...both 6.8mm and 7mm are over the edge, unless you're talking about a heavier weapon with a longer action. The 1950's British .270 and .280 cartridges fell somewhere between a battle rifle and an intermediate cartridge, leaning heavily to the battle rifle side. It would have been better than 7.62 NATO because of soldier's load and BC advancements for DM's and LMG's, but is a bit much for maneuver-oriented dismounts, especially considering the space that magazines take up on the soldier.I do not advocate .270 British for future use. I was merely noting that it would've made a better military round if it had been loaded with a longer, more streamlined bullet.
As for 6.8 SPC, with a long-ogive bullet, I don't see it being "over the edge." BC of the Barnes 120gr .277" solid is close to that of the 110gr .264" solid (0.438 vs 0.452). Shouldn't ballistics of the two be about the same?