SKS rds.' power compared to M-1 Carbine.

[Ignition Override]

Numerous people have stated that the energy of the M-1 Carbine round at 100 yards is roughly equal to that of a .357's muzzle energy.
Most of us realize that the 7.62x39 is a bit more powerful, and is often compared to the 30-30.

Whether that is the exact case or not makes no difference (to me), so for the sake of a general comparison, at about how many yards will the bullet energy from a typical full-length SKS approximate a .357 at the muzzle?

Is there a website with such a chart?

 

[Baba Louie]

Well, if a 7.62x39 has 2400ish fps at muzzle and 1800ish fps @ 200 yds (880+/- ft/lbs)...

and a .357 magnum has approx 1600 fps at muzzle w/ 710 ft/lb...

it'd be somewhere way out there past 220 yds or so... wouldn't ya think?

according to Chuck Hawks site, the .30 Carb. does 1990 fps at muzzle and 1236 fps @ 200 yds for (373 ft/lbs)

 

[Snowdog]

The spitzer/boat tail profile of the 7.62x39's heavier slug would probably contribute some to the bullet's ballistics at such ranges.
The stubby little .30 Carbine has a rounded nose and flat base. This really doesn't affect the .30 Carbine slug though as it's designed to be used within ranges where the benefits of a spitzer profiles aren't readily noticed.

The 7.62x39 is about 50% more "powerful" than the .30 Carbine and there's really no way of getting around that. However, the svelte M1 Carbine is just so darn handy and plenty lethal with JHP/JSP ammunition within 100 yards.

 

[USSR]

The REAL beauty of the M1 Carbine is, you can reload full-power ammo for the price of .22 rimfire.

Don

 

[shotgunjoel]

USSR, why is it that on every M1 Carbine thread that picture shows up?

 

[451 Detonics]

7.62X39 versus 30 Carbine is a very apple4s to oranges comparison, you are talking about rounds (and rifles) made for 2 very different purposes. One as designed as a MBR, the other as a alternative for a handgun.

Compareing the 7.62X39 to the .357 is more like comparing apples to cauliflower...not even the same food group. At about 275 yards the velocity of the SKS would be similar to the muzzle velocity of the .357 but you still have a huge difference in the bullets that makes them perform quite differently.

 

[dprice3844444]

762x39 ammo is cheaper than 30 carbine

 

[USSR]

USSR, why is it that on every M1 Carbine thread that picture shows up?

Because there's always someone who'll say "762x39 ammo is cheaper than 30 carbine".

Don

 

[rcmodel]

about how many yards will the bullet energy from a typical full-length SKS approximate a .357 at the muzzle?

350 yards.
Assuming typical .357 Mag muzzle energy is about 550 ft-lb.

7.62x39
Muzzle = 1,527 ft-lb.
100 yards = 1,159 ft-lb.
200 yards = 865 ft-lb.
300 yards = 638 ft-lb.
350 yards = 548 ft-lb.
400 yards = 473 ft-lb.
500 yards = 361 ft=lb.

rc

 

[Hocka Louis]

I always luv the chest-pounding "MBR" sentences. Arghhh. The SKS was, of course, the main battle rifle with the intermediate cartridge. Just as the .22's have become MBR's. "No way Louis -- an MBR is, like, a .308." Look at rate of twist and the different ammos developed for the M-16 -- many are to maximize its effectiveness on the open battlefield as, that's right, a MBR in reality.

The SKS is a potent and serviceable rifle if not a little "soviet" and aged. The M-1 Carbine is a really good pistol.

 

[Purgatory]

Here are 2 Excellent resources that I use often.

http://www.handloads.com/calc/

http://www.chuckhawks.com/rifle_trajectory_table.htm

You can use the Chuck Hawks trajectory table when figuring weights and velocities, etc. to plug in for the Ballistic Calculator.

Save the links in your computer's favorites. You'll use them often.