S&W Melonite coated barrel vs Noveske chrome lined barrel.

[scottryan]

You mean to say that it's not also an anti-corrosion treatment?

When did I ever say or imply this?

[scottryan]

To what extent is this effects throat errosion in a firearm is yet to be proven as even I can see that S&W's claim of "no visible" damage is highly subjective. (and for what it's worth, I do believe that their high round count was across 5 or so different test guns if I remember correctly, rather then in a single rifle)

So now it is 34,000 rounds in the gun?

[BAC]

50 years of empirical data on chrome lined barrels. Zero vetted data on nitrocarburized RIFLE barrels.

Edit: Click click

Abstract: The procedure as developed by Springfield Armory for design and fabrication of a stellite-lined, chromium-plated barrel for the 5.56mm machine gun is described. Results of erosion tests of the stellite-lined barrels, standard barrels, and two other types of barrels show that the stellite-lined barrels are superior in erosion resistance. One of the stellite-lined barrels was fired 43,994 rounds prior to rejection. A maximum of 12,476 rounds was fired from one of the standard barrels prior to rejection. The two other types of barrels - a standard barrel with a nitrided bore and a barrel of two-piece construction - were fired 29,874 and 990 rounds, respectively, before rejection. The two-piece barrel has an 18-inch forward section made from Cr-Mo-V steel and the rear section, including the chamber, is made entirely of stellite. All barrels were rejected on the basis of the projectile instability criterion - 15 degrees of yaw of 20 per cent of the projectiles fired. All barrels were fired at an average rate of 200 shots per minute.

The study unfortunately invalidates its own usefulness in comparisons by using a plain, unplated barrel as the control instead of a standard chrome-lined barrel, but it's a worthwhile read nonetheless.


-B

[GrumpyM4]

When did I ever say or imply this?

Melonite cannot prevent throat erosion. Surface hardness of material does not affect a materials resistance to a pressurized jet of hot flame.

Making no mention of the other properties of nitrogen and carbon enhanced steel.

Implication? Maybe, maybe not. Glaring omision? Yup.

So now it is 34,000 rounds in the gun?

Don't ask me, ask S&W. I don't work for them so I have no idea how many rounds per firearm, although I was wrong about the number of guns S&W claimed to have used.

According to this: http://thetruthaboutguns.com/2011/06...on-mp15-sport/, it was only two rifles.


So, all that aside, come up with any facts yet?

[gundawg]

some great info here, i was wondering about what the general thought was on the MP sport Melonite barrel. I love the finish on my MP's, but knew nothing of how it would perform as the lining of a AR barrel.

[Heavy Metal]

Once wear reaches or exceeds allowable limits, it's damage.

The way I see it, if you're going to be shooting 170,000 rounds, you won't be asking Mr. Owl how many licks it takes to get to the center of a Tootsie Pop

ROFLMAO! That is the post of the day!

[scottryan]

So, all that aside, come up with any facts yet?

What do the following price point hobby grade firearms all have in common?

1. Bushmaster ACR
2. SIG556
3. S&W Sport AR-15

A nitrided barrel.

[CC556]

What do the following price point hobby grade firearms all have in common?

1. Bushmaster ACR
2. SIG556
3. S&W Sport AR-15

A nitrided barrel.

And you could just as easily come up with an even longer list of hobby-grade rifles that have chrome lined barrels. It doesn't prove anything. Do you have any hard data at all, or are you just hoping you can toss out some disingenuous and simplistic responses to distract people?

[bubba04]

Ahh crap, I think I just ruined my glock.

Its like saying you can't take a blow torch and cut through a Glock slide because it has a melonite/tenifer treatment.

[MarkG]

What do the following price point hobby grade firearms all have in common?

1. Bushmaster ACR
2. SIG556
3. S&W Sport AR-15

A nitrided barrel.

Your forgot LWRC!