M1 Carbine Accuracy

purple

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The M1 Carbine has never been known for it's accuracy. US Army accuracy standards specified a 25 yd grouping of 3 x 3 inches with 5 out of 7 shots. This was probably not unreasonable considering that the Carbine was basically a replacement for the pistol.

I've only shot them as plinkers or as rabbit guns before the 1978 restrictions on them. Yesterday I decided to shoot a couple that I had built from the bench @ 50 yds just to see what they would do on paper. Results were surprising and certainly better than the military standard which was set @ 25 yds.

Rifle No 1 is a 1943 Rock-ola with a 4-45 Inland barrel. Average group size was 2.05 inches using American Eagle and Remington ammo. Rifle No 2 is a 1943 Winchester with a 1-44 Underwood barrel. It produced groups averaging 1.90 inches with the same ammo. The American Eagle ammo proved to be a bit more accurate in both pieces.

The Carbine is a tough one to tweak for accuracy. The barreled action is basically free floating in the stock, except where it is hung from the rear recoil lug. Varying the tension of the barrel band can make a difference. Ammo can make a difference as well. Based on this experience I'm going to try them again with WRA ammo and see what happens.

By way of comparison I also tested a 1944 vintage Springfield Garand with a nice original barrel and a 1942 vintage Remington M1903 Springfield that I had recently re-built with a new 9-44 dated High Standard barrel. Using handloads @100 yds, average group size from the M1 was 1.82 inches, ahead of the M1903 which averaged 1.98 inch groups. Normally it's the reverse with an M1903 showing better accuracy than an M1, all things being equal. Going to try some other handloads in this M1903 as I'd like to get it closer to another one that I recently re-built with a new 7-44 Springfield Armory barrel. That one turned in groups averaging 1.18 inches:D.
 
Purple the two carbines that I owned I never found very accurate at all.

Those groups are respectable. I never gave much thought all these years since, what the little carbine was capable of doing until I came across a video on youtube by tnoutdoors9. It's listed as "M-1 carbine 200yds(unplanned).

http://www.youtube.com/watch?v=AzKS8dT3e0o


Go full screen and set it to 1080HD, and watch the vapour trails all the way to the steel IDPA type target.


This carbine in the hands of a good marksman, could engage targets out to 200, and in no wind condition as in the video shoot, I'm sure harassing fire to 300yds.
 
I'm thinking results may vary. A few years back a friend who owned one, brought his to the range. We maxed out the sights @300 yards I believe and without much effort, promptly struck a ten inch gong repeatedly (IIRC about 80% hits) from the bench with no wind.

ymmv
 
Wouldn't do it to a collectible carbine, but the barrel can be synthetic bedded to the tip of the forend. This does away with some of the looseness.
 
Ever try running handloads through those M1 carbines?
I'm wondering if there is potential for improved accuracy over factory ammo.

Probably, but don't try to hot rod them! It's easy to damage the bolt trying to make the round into a mini 30 06. Have seen a couple of "custom" bolts that no longer have locking lugs........:eek:
 
When I first started collecting military rifles I had 5 or 6 military carbines and one plainfield through my hands. I shot all of them for accuracy at 50 yards with surplus WW II US ammo. The best of them was a Saginaw that had been reworked by the Bavarians after the war--it would keep most of the shots from a 15 round mag on a playing card. The worst was an M-2 that had been converted back to an M-1--it wouldn,t keep 15 shots on an 8.5 x 11 piece of paper at 50 yards. The rest of them fell somewhere in between.

FWIW.
 
Ran across this old target, IBM receiver with a non-restricted barrel,,groups good with Remington ammo and a red dot sight..
IMG_1018-Copy_zps3b796f9f.jpg
 
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