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We can all agree that AR’s are not only reliable but are great at short ranges from 0 to 300 yards.
But what if you want to reach out further to 400 yard or 1000 yards? For the larger cartridge would the AR be able to deliver the same punch as its cousin the .308 or 6.5 Creedmoor?
Decision - AR10 - AR15 - Lets - Look
Before making the decision to go with an AR10 or AR15, lets take a look at the comparisons.
The AR10 rifle is an air-cooled lightweight rifle that is gas operated and comes with the 7.62mm (.308) barrel.
Loads - Magazine - Box
uses the standardized 7.62x51mm loads and has a standard 20-round detachable magazine box.
It weighs between 3.29kgs and 4.05kgs, without the magazine and ammo. The super-lightweight feature was as a result of the use of aluminum alloy.
Metal - Parts - Steel - Bolt - Barrel
The metal parts were save for the steel bolt, barrel and bolt carrier group.
With its direct gas impingement mechanism where the propellant gas goes through the rifle’s cylinder that runs parallel with the gun barrel thereby impinging the bolt carrier mechanism.
Fire - Rate - Rounds - Minute - FPS/
This produces a high cyclic fire rate of about 700 rounds per minute with a 2,772 FPS/ 845 m/s muzzle velocity.
This rifle employs the same “direct gas impingement” as the one used on AR10s.
Results - Rounds - Minute - Gun - Velocity
Which results in 800 rounds per minute from this gun, with a muzzle velocity of 3200 FPS or 975 m/s being realized to a maximum effective range of about 600 yards.
Whereas the AR10 features the .308 Win or 7.62x51mm NATO chamber, the AR15 features the .223 or 5.65 x 45mm chambers.
AR10 - Platform - Chamber - Chamber - Loads
In the AR10 platform, it is unsafe to load the .308 in a 7.62x51mm chamber but the .308 chamber can accept the 7.62x51mm loads. Similarly, you can load .223 cartridges in a 5.65 x 45 chamber of the AR15 but not the inverse.
For those using both AR’s, here are some parts...
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