All posts tagged 14.7 inch barrels

The 6.8 SPC still not catching on

I was never a big fan of the .223 or 556 caliber until I actually got off the bench and started doing real gun fighting.   I started out like many, with a Russian AK variant which was extremely reliable, but when it came to target engagements out to 400 meters and for close quarters gun fighting, there was a substantial difference in hit ratio.  Hit ratio was something that I never dealt with before because it was all about penetration and accuracy.   Now I know that being able to shoot a reliable rifle doesn’t mean you are going to win a fight, it’s all about hits and who gets the hits first.

There have been times when an AK74 type of rifle has done almost as well or equal to an M4 Carbine, but the shooter has to have more experience in gun  handling skills to keep up.  I compared the close quarters hit ration of the 6.8 SPC and found it to be closer to a 7.62×39 AK than a .223 variant. CMMG upper receivers are something to be considered if you are looking to mess around with bullet calibers.  Muzzle hop or flip will affect  your accuracy and speed and that is something to be concerned about.  Room to room and house to house fighting is something which occurs in seconds and putting 5 hits on paper is better more reliable at stopping a threat than one bad hit.   Bullet penetration is also something that can be over blown when it comes to CQC because that is a bad thing in a hostage situation.

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Getting the most out of the .223 gun

Even if you are someone that get’s very accurate results from your M4 or 14.7 inch barrel AR15.   You may be getting hits, but that caliber can become very weak once you get several hundred yards out.   When I picked up a chronograph I was blown away by how much velocity I actually got out of short barrel handguns and my M4 rifles because it did not match up with what I previously read about on the internet.   I saw 75gr HPBT clock at 2900fps out of my guns when I thought they would have been close to 2750.   I know you can push the limits with hand loaded ammunition, but you do have to be careful about excessive wear and tear.

I have been recently thinking about picking up an LWRCI Repr because I have been a big fan of battle rifles and even the military has brought back the 7.62 DMR rifle in various configurations.  I have even seen a few British troops show up with FAL rifles with scopes on them.   There is also a difference between what you can get out of a 55gr hpbt and a 75gr hpbt out of a 5.56 gun.  Sometimes an 18-20 inch AR15 upper receivers will get you far more range and punch than M193 ball ammo.  What you can do at 400-800yds with those guns compared to a 55gr bullet is considerable especially with wind drift ect.   Of course much of this is up to the skill level of the shooter.

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