03-11-2011, 04:19 AM
Considering that at ranges beyond 300m and especially past 400m the infantry squad is better off using the M-240, the added power many of the rounds touted as replacements will be wasted.
The two rounds that would be the easiest to upgrade from the 5.56x45 would be the 6x45 and the wildcat .25 Bailey. While both would be a quick upgrade, the upgrade they provide is not worth the cost.
FWIW, I think that the parameters laid down for the 6.8 SPC are about right.
1) At 100m, the SPC round, when fired out of a 16" barrel carbine, had to have at least 200fps more velocity than the 7.62x39, when fired out of an AK/AKM/AK-103.
2) When fired out of a Mk12 style carbine, the SPC round had to have more KE from 0m to 500m than the Mk262 round, when fired out of a Mk12.
Not very aerodynamic though.
The two rounds that would be the easiest to upgrade from the 5.56x45 would be the 6x45 and the wildcat .25 Bailey. While both would be a quick upgrade, the upgrade they provide is not worth the cost.
FWIW, I think that the parameters laid down for the 6.8 SPC are about right.
1) At 100m, the SPC round, when fired out of a 16" barrel carbine, had to have at least 200fps more velocity than the 7.62x39, when fired out of an AK/AKM/AK-103.
2) When fired out of a Mk12 style carbine, the SPC round had to have more KE from 0m to 500m than the Mk262 round, when fired out of a Mk12.
Not very aerodynamic though.