Home Forums Hunting & Shooting Hunter's Campfire 30 carbine and north koreans

This deals with 5.56 in the sandbox, but makes me appreciate my 308 AR Carbine all the more

What I seem to be seeing as much as anything, is we need to tell the rest of the world to piss off and start loading projectiles that do damage. miles

AMEN!

+2
This notion of a touchy-feely war where no one gets hurt is the height of stupidity. Load up TSX's in 5.56 and get busy.

I've only ever had one patient shot with a .30-06 M2 Ball round. It was a woman who used a Garand to kill herself in her bathroom. The bullet traveled through her and was found sideways on the second layer of sheet rock in the wall. I walked around to where the bathroom was on the other side and found the tip of the base of the bullet just starting to poke through the off side. So it went through one body, and not quite through 2 layers of sheet rock.

Out of an M16A2?

M855 ball, 3100 fps at the muzzle gives 1322 ft.lbs. at the muzzle with 27 pound-feet of momentum and a TKO of 6. At 500, it drops to 1706 fps, 400 ft.lbs., 15 pound-feet, and a TKO of 3. Good thing it tumbles and separates, huh?

I found this interesting:

The Mk 262 is a match quality round manufactured by Black Hills Ammunition made originally for the Special Purpose Rifle (SPR). It uses a 77-grain (5.0 g) Sierra MatchKing bullet that is more effective at longer ranges than the standard issue M855 round.

In 1999, SOCOM requested Black Hills Ammunition to develop ammunition for the Mk 12 SPR that SOCOM was designing. For the rifle to be accurate out to 600 yards, Black Hills "militarized" a cartridge that used the Sierra 77 grain OTM (Open Tip Match) projectile; it switched from a .223 Remington to 5.56 mm case, increased pressure loading, crimped and sealed the primer, and added a flash retardant to the powder. The Mk 262 Mod 0 was adopted in 2002. Issues came up in development including reliability problems in different temperatures and when the weapon got dirty, and cycling issues in cold weather due to the slightly shorter barrel of the SPR compared to the full-length M16A2 barrel. The problems were addressed with a slower burning powder with a different pressure for use in the barrel, creating the Mk 262 Mod 1 in 2003. During the product improvement stage, the new propellant was found to be more sensitive to heat in weapon chambers during rapid firings, resulting in increased pressures and failure to extract. This was addressed with another powder blend with higher heat tolerance and improved brass. Also during the stage, Black Hills wanted the bullet to be given a cannelure, which had been previously rejected for fear it would affect accuracy. It was eventually added for effective crimping to ensure that the projectile would not move back into the case and cause a malfunction during auto-load feeding. Although the temperature sensitive powder and new bullet changed specifications, the designation remained as the Mod 1.[95]

According to US DoD sources, the Mk 262 round is capable of making kills at 700 meters. Ballistics tests found that the round caused "consistent initial yaw in soft tissue" between 3-4 in at ranges from 15 feet to 300 meters. Apparently it is superior to the standard M855 round when fired from an M4 or M16 rifle, increasing accuracy from 3-5 minute of angle to 2 minute of angle. It evidently possesses superior stopping power, and can allow for engagements to be extended to up to 700 meters when fired from an 18 inch barrel. It appears that this round can drastically improve the performance of any AR-15 platform weapon chambered to .223/5.56 mm. Superior accuracy, wounding capacity, stopping power and range power has made this the preferred round of many Special Forces operators, and highly desirable as a replacement for the older, Belgian-designed 5.56×45mm SS109/M855 NATO round. In one engagement, a two-man special forces team reported 75 kills with 77 rounds.[96][97] The Mk 262 has a higher ballistic coefficient than the M855 of (G7) 0.181, meaning it loses less velocity at long-range.[85]

Anybody that has ever skinned a coyote knows why so many cartridges "suck."



Travis

Anybody that has ever skinned a coyote knows why so many cartridges "suck."



Travis

Out of an M16A2?

M855 ball, 3100 fps at the muzzle gives 1322 ft.lbs. at the muzzle with 27 pound-feet of momentum and a TKO of 6. At 500, it drops to 1706 fps, 400 ft.lbs., 15 pound-feet, and a TKO of 3. Good thing it tumbles and separates, huh?

Besides lower velocity and energy, carbine ball doesn't yaw and produce wounds by the same mechanism as a spitzer projectile.

It's not the cartridge, it's the shooter. Using the wrong tool for the job, or not hitting the right spot. But a lot of guys blame the tool, not the user.

i do know of a guy that loaded one round of m2ball in a springfield went into the bathroom, put the barrel in his mouth and pulled the trigger. It did work. Also put a hole clear through the roof, among other things.