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NM SS Barrel shortened and Comp Added?

This is a discussion on NM SS Barrel shortened and Comp Added? within the Modern M14 forums, part of the M14 M1A Forum category; I'm thinking about shortening my SA NM barrel. The front sight would become a one-piece gas system lock sight, the NM barrel would be shortened ...


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Old June 12th, 2017, 10:43 AM   #1
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NM SS Barrel shortened and Comp Added?

I'm thinking about shortening my SA NM barrel. The front sight would become a one-piece gas system lock sight, the NM barrel would be shortened to 18", threaded, and then a comp would be added. Perhaps the SEI navy comp or a Surefire Warcomp or something of the like.

I wondered if someone else here has been through that process and wondered what the end effect on accuracy was?

I'm thinking that shortening my SA NM barrel will increase accuracy somewhat. But that's just my theory based off of increasing barrel rigidity.

The goal is to 1) make the overall system handier, 2) more stable (with the comp), and 3) slightly more accurate because the barrel is shorter.

Thanks.

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Old June 12th, 2017, 10:56 AM   #2
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It's possible, I personally would just buy a shorter barrel.

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Old June 12th, 2017, 11:07 AM   #3
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Yeah, does anyone make a heavy profile 18" barrel? What I was suggesting would make the rifle a bit of a unicorn.. the NM contour shortened down.

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Old June 12th, 2017, 11:09 AM   #4
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Jon Wolfe

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Old June 12th, 2017, 11:11 AM   #5
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This is a medium weight 19.25 NM.
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Old June 12th, 2017, 11:13 AM   #6
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Wolfe makes a 18 NM.

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Old June 12th, 2017, 11:19 AM   #7
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Will he install on a SA action? I know some makers are picky.

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Old June 12th, 2017, 11:20 AM   #8
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That I can't answer with certainty, but someone will.

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Old June 12th, 2017, 11:24 AM   #9
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Give Jon a call. He's very easy to work with.

http://shop.m-14parts.com/

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Old June 12th, 2017, 11:31 AM   #10
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Quote:
Originally Posted by Wasted ammo View Post
It's possible, I personally would just buy a shorter barrel.
I'll agree with Wasted.

The amount of gunsmithing would probably be less with a new barrel.

Keep the 22" barrel as a spare or sell it off to help cover the other.

My research (no actual experience) finds, there is very little, if any at all difference in accuracy between the barrel lengths.

The biggest effect on accuracy is wind drift.

The muzzle Velocity from an 18" barrel is lower than that of a 22" barrel using the same load.

Therefore the wind effects the round out of the 18" more so than out of the 22".

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Old June 12th, 2017, 11:53 AM   #11
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Quote:
Originally Posted by Banshee8 View Post
I'm thinking that shortening my SA NM barrel will increase accuracy somewhat. But that's just my theory based off of increasing barrel rigidity.
Why not cut the barrel down to 16" then?

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Old June 12th, 2017, 12:39 PM   #12
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I have built dozens and dozens of 18.5" "SHORTIFIED" M14 TYPE RIFLES. Start with a standard 22" barrelled M14, and just keep shoving the muzzle into the Balvar 1 hp bench grinder until you get to the length you like.
(;-[)

Seriously,
After probably more than 100 M14 "shortifications", my experience is that the shorter barrels do not really increase accuracy on most such conversions.
Accuracy MAY increase noticeably if ...
IF ...
- the old crown was bad
- the muzzle had worn out rifling
- the flash hider was loose or crooked

And,
Less likely and unpredictable,
if the barrel harmonics changed for the better.
This is also a function of what weight of muzzle attachment you now thread on.

I have experimented considerably with these shortifications, and some of these shortys,
WITH THE IRIGINAL CHINESE CHROME LINED BARRELS,
Are capable of MOA.
Good enough for me and a "shorty".

PS:
my favorite Gunsmith, Joe Dlask, in Vancouver Canada, now offers a cut, crown, and thread for the M14 barrels, WHICH DOES NOT REQUIRE RE & RE of the barrel. Price is reasonable.

BTDT
much improved balance and handling are the main motivators, although adding a REMOVEABLE threaded on muzzle device is also a good excuse.

M14.CA markets my design for such a muzzle device, which features a clamp on slightly taller front sight tower. MUCH better than any GRFS, which can rotate slightly when you remove and replace the gas plug, requiring a zero check every time you clean.

JMHO
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Old June 12th, 2017, 12:48 PM   #13
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Quote:
Originally Posted by Lazerus2000 View Post
much improved balance and handling are the main motivators, although adding a REMOVEABLE threaded on muzzle device is also a good excuse.
This is why I did it

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Old June 12th, 2017, 01:06 PM   #14
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Quote:
Originally Posted by Buelligan View Post
Why not cut the barrel down to 16" then?
My reasoning is along the lines of what Wiz said. I'm not interested losing too much velocity for downrange BC performance. I have what I'd consider to be a heavy gun. I don't want a heavy 16" rifle.

If I wanted a really good 16" M1A I'd basically start over, sell everything and go much lighter. I'd probably do a vltor stock and a low-range variable like a trijicon 1-8x28. I'd call it a 800 yard gun, max.

I'm thinking if I stay at 18", 800 is still easy to shoot from a heavy gun, and a 1000 hit is still reasonably probable.

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Old June 12th, 2017, 01:42 PM   #15
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Quote:
Originally Posted by Lazerus2000 View Post
I have built dozens and dozens of 18.5" "SHORTIFIED" M14 TYPE RIFLES. Start with a standard 22" barrelled M14, and just keep shoving the muzzle into the Balvar 1 hp bench grinder until you get to the length you like.
(;-[)

Seriously,
After probably more than 100 M14 "shortifications", my experience is that the shorter barrels do not really increase accuracy on most such conversions.
Accuracy MAY increase noticeably if ...
IF ...
- the old crown was bad
- the muzzle had worn out rifling
- the flash hider was loose or crooked

And,
Less likely and unpredictable,
if the barrel harmonics changed for the better.
This is also a function of what weight of muzzle attachment you now thread on.

I have experimented considerably with these shortifications, and some of these shortys,
WITH THE IRIGINAL CHINESE CHROME LINED BARRELS,
Are capable of MOA.
Good enough for me and a "shorty".

PS:
my favorite Gunsmith, Joe Dlask, in Vancouver Canada, now offers a cut, crown, and thread for the M14 barrels, WHICH DOES NOT REQUIRE RE & RE of the barrel. Price is reasonable.

BTDT
much improved balance and handling are the main motivators, although adding a REMOVEABLE threaded on muzzle device is also a good excuse.

M14.CA markets my design for such a muzzle device, which features a clamp on slightly taller front sight tower. MUCH better than any GRFS, which can rotate slightly when you remove and replace the gas plug, requiring a zero check every time you clean.

JMHO
YPMMV
LAZ 1
Thanks for sharing your experience, have you shortified any NM barrels?

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