Arguably two of the most popular ammo sies on the market today have to be the 7.62x39mm and the .223 (5.56). But is there a difinative winner in
comparing the ammunition?
The .223 and the 7.62x39mm are both consitered small arms ammunition, but differ widely in the grain size of the cartriges. For instance, the
A 77 grain, blunt tip bullet has a velocity of 840 meters a second with an energy rating of 1,293 foot pounds of force.
A 123 grain, full metal jacket bullet has the velocity of 720 meter a second and an energy rating of 1,516.6 foot pound of force.
Granted, we cannot compare apples to apples completely as I do not have the velocity and energy rating of a bullet the same grain for each caliber.
However, something suprising occurs in these numbers: The higher grain weight of the 7.62x39mm bullet actually travels slower than the less grain in
the .223 bullet, however the force excerted by the bullets show that the larger grain does indeed impact the hardest.
These two cartridges are favored more than likely for the weapons they represent most often, the AK-47 and the M-156/AR-15.
While collaborating as to the winner of this cartridge battle, we cannot forget about price and availability. The 7.62x39mm seeing to be present
everywhere and having design times in World War II, obviously is readily available. the .223 however, being favored by our mitary and others, seems
to fluctuate with more regularity in price and availability.
The last aspect I'd like to bring forward, is the kick experianced when firing the seprate cartidges. The .223, having the same diameter bullet as
a .22 LR, obviously kicks a lot less and regains muzzle level quicker than that of the bucking 7.62x39mm.
I have been told by someone much heavier into weapons than I (with 60 plus years of smithing knowledge) that the .223 was indeed employed by the US
to give anyone the ability to use it, to get away from the heavy and bucking M1 Grands so that more soldiers would be comfortable when firing the
weapon. This seems to be true, remembering back to the first time I fired both the .223 and the 7.62x39mm respectivly. Ease of usage might not be a
bad aspet to add to the comparison.
Unknown to me, and some information that I hope to gain in this post, is the splay or tumbling effect that each cartridge possesses.
So there you have it folks... Let see what cartridge wins the battle of what could be the best military small arms cartridge. And please, do not
vote in favor of the weapon firing it (saying the AK looks so much cooler than the M4).
Thank you for your input, posting and of course... Your time!
edit on 21-12-2010 by Jkd Up because: My English teacher would be