7.62 -vs- 5.56

[rob]

ive been watching band of brothers so right now im a bit partial to the 30.06. man times have changed

[Michael RVR]

Or to look at in another way, if you had the 6.8x43 in rifles and MGs, you wouldn't need the 7.62x51.

Tony do you have any stats as to how the 6.8x43 measures up against the 7.62x51 energy wise ?

Just wondering as to its effectiveness as a direct fire support/coax weapon, say out to 2000m.

[Tony Williams]

This is from the article on Assault Rifles and their Ammunition on my website:

"This is the 6.8x43 Remington SPC (Special Purpose Cartridge) which fires a 115 grain bullet at 2,650 fps from a 16.5 inch barrel (7.45g at 808 m/s = 2,430j); very similar to the 'ideal' 6.85mm listed above. The cartridge case is based on the old .30 Remington commercial round, with a larger diameter than the 5.56x45 to increase the case capacity. This round develops 55% more muzzle energy than the 62 grain SS109/M855 loading at the muzzle, rising to 84% better at 550m due to its superior ballistic coefficient. The trajectory precisely matches that of the 7.62x51 ball out to 500m, and is only 10cm low at 600m."

I think it would probably run out of puff by about 800m. 2,000m shooting calls for the .50!

Tony Williams

[Ian H]

6.8mm and 6.3mm are two different rounds right? I'm getting confused.

Also, sigs have been switched off unfortunately.

Yay! 300

[Tony Williams]

What 6.3mm?