Brownells: Smyth Busters: Are Chrome-Lined Barrels Less Accurate?
BY Herschel Smith
3 years, 8 months ago
I can’t really think of a single reason they would be.
30 Mar 2021
3 years, 8 months ago
You are currently reading "Brownells: Smyth Busters: Are Chrome-Lined Barrels Less Accurate?", entry #27201 on The Captain's Journal.
This article is filed under the category(s) AR-15s and was published March 30th, 2021 by Herschel Smith.
If you're interested in what else the The Captain's Journal has to say, you might try thumbing through the archives and visiting the main index, or; perhaps you would like to learn more about TCJ.
This article is filed under the category(s) AR-15s and was published March 30th, 2021 by Herschel Smith.
If you're interested in what else the The Captain's Journal has to say, you might try thumbing through the archives and visiting the main index, or; perhaps you would like to learn more about TCJ.
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On March 30, 2021 at 11:24 pm, George 1 said:
I have a Criterion barrel (CL) in one of my builds. It is indeed very accurate. It is not my most accurate barrel though. The AR barrel that is my most accurate is a La Rue PredatAR. They are stainless. I have a few of them and they are very consistent. The Criterion is however more accurate than two of them.
I should state that my definition of accuracy is that a rifle must shoot the cheap ammo well. That is at least 2.5″ MOA from a rest for the XM 855 or XM 193. Not necessarily both for one rifle. I do not normally shoot expensive ammo. The La Rue barrels and the Criterion barrel that I have will do that.
I did shoot some Hornady Black 5.56 though a few of my rifles. One of the La Rue equipped builds shot a .55 inch 5 shot group @ 100 yds. The Criterion equipped rifle did not do quite that well but it did shoot just over an inch. A good shooter could no doubt do better. So not a scientific test at all.
Like I said I have never tried very hard to find a load that would shoot the best in my guns.
On March 31, 2021 at 11:27 am, Brad said:
Aerospace Machinist and 07 FFL here. They are correct about the relatively new processes. Also the older processes required an Embrittlement Relief process. They’ve been able to skip that step in some cases,which is thermal. There’s also a couple different types of chrome plate. Thin Dense Hard Chrome is a very cool new process. Super tough, smooth, and has a lubricity quality to the surface finish. I haven’t seen that process used on commercial barrels yet, but I know it’s being used on some military barrels.
On March 31, 2021 at 11:06 pm, Gerald Schwartz said:
When you begin to see serious-bench rest people successfully using the treatment, then you can consider that the process either maintains or enhances accuracy. Short of that, any evidence is…anecdotal.