By Dan Lamothe - Staff writer
CAMP HANSON, Afghanistan — The Marine Corps has fielded its new,  enhanced 5.56mm rifle round in Afghanistan, and it’s just beginning to  reach thousands of grunts here.
The two North Carolina-based  battalions involved in the initial assault on the Taliban stronghold of  Marjah — 1st Battalion, 6th Marines, and 3rd Battalion, 6th Marines —  were among the first units to receive a large shipment of Special  Operations Science and Technology ammunition, said Chief Warrant Officer  2 Joshua Smith, battalion gunner for 3/6, headquartered here in Marjah.  Each battalion received 75,000 rounds, but neither used it during the  assault.
“As soon as I got it, I pushed it out to the companies  and basically did a one-for-one swap,” Smith said.
The companies  field the new SOST rounds as they see fit, Smith said, and may be using  their existing supplies of standard 5.56mm ammo first. Grunts with India  Company, 3/6, expected to receive large quantities of the round May 14.
First  Battalion, 3rd Marines, currently deployed in the Nawa district of  Helmand province, recently received its supply of SOST rounds, and other  units in Afghanistan that have not received it are expected to get it  soon.
The round uses an open-tip match-round design common in  sniper ammunition, and is considered “barrier blind,” meaning its aim  stays truer through windshields, walls and other barriers. Initially, it  was considered as a way to increase the lethality of Marines carrying  the M4 carbine, which has less stopping power than the M16A4 because of  its shorter barrel, but was approved for use in January with both  rifles.
Only one major Marine 5.56mm weapon system will not use  SOST rounds, officials said: the M249 squad automatic weapon. The new  ammo fits the SAW but is not currently produced in the linked fashion  commonly employed with the light machine gun.
Infantrymen with 3/6  who have seen SOST ammo said they haven’t used it enough to determine  whether it performs better than standard 5.56mm rounds.
“I got  mine from a [military policeman] attached to the company, but I haven’t  shot them yet,” said a lance corporal who serves as a fire team leader  for India Company 3/6. He is one of the few Marines interviewed by  Marine Corps Times in Afghanistan who was in possession of the  ammunition, and he had only 20 rounds.
Initial studies conducted  by 1/6’s gunner, Chief Warrant Officer 2 Matthew Harris, showed that  Taliban insurgents hit by the new round suffered larger exit wounds, but  information has been limited, Smith said. Attempts to reach Harris were  unsuccessful.
Smith said Taliban tactics play a role in the  limited amount of information the Marines have been able to collect.
“The  Taliban usually doesn’t leave behind bodies or wounded,” he said.
Deadlier ammo
Three fast facts about the new Special Operations Science  and Technology round being used by Marines in Afghanistan:
1. It’s  “barrier blind”: That means the SOST round stays on target better than  the Corps’ existing 5.56mm round after penetrating windshields, car  doors and other objects.
2. It has more stopping power. The SOST  round also stays on target longer in open air and has increased stopping  power through “consistent, rapid fragmentation which shortens the time  required to cause incapacitation of enemy combatants,” according to Navy  Department documents.
3. It was designed with hunters in mind. At  62 grains, the new ammo weighs about the same as most NATO rounds. It  has a typical lead core with a solid-copper shank and is considered a  variation of Federal Cartridge’s Federal Trophy Bonded Bear Claw round,  which was developed for big-game hunting and is touted in a company news  release for its ability to crush bone.