Back in April, I wrote a three-part series about upgrading and outfitting rifles and carbines for personal defense. The titles were:
- The personal defense rifle, part 1: a few thoughts
- The personal defense rifle, part 2: reader's questions
- The personal defense rifle, part 3: choosing ammunition
In the third article, I recommended the Mk. 262 77-grain OTM round as an optimum selection for all-round defensive use. It performs well at short, medium and long ranges, and is said to be preferred in 5.56x45mm ammunition by most US special forces units. I use the Israeli version of that round, IMI's Razor Core (reviewed at the link).
JC Dodge has just conducted his own test of the same ammunition, and reports as follows.
For a number of years I have been told by friends who have used the 77 grain stuff in combat, that it was a very effective round for the 5.56 AR platform. Although I have not talked to anyone who used a short barreled AR about its down range, real world effectiveness, I was curious, after I bought a a half case of it from SGAmmo.com.
At almost 500 bucks with tax and shipping, that’s almost a dollar a shot, so I hoped I was getting my money’s worth. I was expecting good results out of my 16.5″ AR, but I did not expect my 11.5″ AR to exceed the longer barreled rifle’s performance.
. . .
I have shot plenty of AR’s which grouped well within two inches at 100 meters. I generally expect this kind of performance out of that platform in a quality build. Getting this kind of accuracy performance out of a short barreled AR, along with the numerous reports of the 77 grain OTM’s terminal performance on combatant “Target Interdictees”, makes selecting this ammo for a defensive weapon a “No Brainer” if you have an AR, and are able to get hold of some.
There's more at the link, including some impressive groups on target. The reader comments below the article, and user reviews at the SGAmmo link, are also worth reading.
It's very hard to find this round at present, given the current shortage of defensive ammunition, but it's worth keeping your eyes open for it, or any of the other versions of the Mk 262 from Black Hills and other suppliers. It's become my standard defensive load in my 5.56mm weapons.