AMU/Marine teams using moly at Perry?
- Thread starter js2013
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30Cal
Member
They did not.
ocabj
Member
Moly = Molybdenum disulfide.
Generally, it is a lubricant used in conditions that require high lubricity with extreme temperatures.
Bullets can be coated in moly. It is known to decrease fouling in the bore. It has also been attributed to decrease barrel wear, particularly in the throat. Moly coated bullets will have less pressure a velocity than it's equivalent non-moly counterpart with the same load data.
It has been found that moly coated bullets are more likely to be less accurate than non-moly bullets.
Generally, it is a lubricant used in conditions that require high lubricity with extreme temperatures.
Bullets can be coated in moly. It is known to decrease fouling in the bore. It has also been attributed to decrease barrel wear, particularly in the throat. Moly coated bullets will have less pressure a velocity than it's equivalent non-moly counterpart with the same load data.
It has been found that moly coated bullets are more likely to be less accurate than non-moly bullets.
Once you have seasoned a bore with Moly bullets you cannot use a conventional bullet in that bore, everything fired down the barrel must be Moly and if you decide you don't like or don't want to use Moly anymore getting the stuff completely cleaned out of a bore is a job best left to Superman.
More trouble and expense than the actual payoff will justify.
More trouble and expense than the actual payoff will justify.
Fly320s
Member
Onmilo,
Would that include low velocity handgun cartridges such as .45 ACP?
I have a bunch of Precision Bullet's moly-coated .45s to load up.
Would that include low velocity handgun cartridges such as .45 ACP?
I have a bunch of Precision Bullet's moly-coated .45s to load up.
rbernie
Contributing Member
I've heard that from a number of sources, but does anyone know WHY this is so?
ocabj
Member
You're going to sheet copper over moly, moly over copper, copper over moly, etc, if you mix moly and naked bullets.
30Cal
Member
You can mix MK and non-MK bullets; you just won't get the moly "benefits."
Ty
Ty
rbernie
Contributing Member
Why is that a problem? I'm serious - I just don't understand why that would be considered such a bad thing that people literally advocate scrubbing the bore for hours to remove the residual moly.....
ocabj
Member
It is extremely difficult to remove moly from a bore. Extremely. Most people don't even clean their barrels properly enough as is to remove copper. It is pretty much a guarantee that switching between moly and non-moly will result in layering of copper and moly in the bore.
USSR
Member
+1. What ocabj said. To say nothing of the fall off in accuracy when you run nakid bullets thru a molyed bore.
Don
Don
I’ve been shooting moly coated bullets off an on since about 1996. I’ve shot thousands of them in NRA highpower. 
I have a Krieger palma barrel that has shot cleans at 600yds with moly coated bullets, and then next season shot cleans at 600yds without moly coated bullets. Why did I do that? I ran out of moly coated bullets and it was a pain in the neck to coat more, and I already had a brick of un coated palma bullets sitting in the basement. I didn’t do anything special to clean the barrel. It still shot great with high X counts.
I don’t know about benchrest applications since NRA high power isn’t benchrest. It may be true that in that application that there are noticeable differences. I also can’t comment about shooting them in rough OEM barrels since I don’t have any that I have shot moly through.
B
I have a Krieger palma barrel that has shot cleans at 600yds with moly coated bullets, and then next season shot cleans at 600yds without moly coated bullets. Why did I do that? I ran out of moly coated bullets and it was a pain in the neck to coat more, and I already had a brick of un coated palma bullets sitting in the basement. I didn’t do anything special to clean the barrel. It still shot great with high X counts.
I don’t know about benchrest applications since NRA high power isn’t benchrest. It may be true that in that application that there are noticeable differences. I also can’t comment about shooting them in rough OEM barrels since I don’t have any that I have shot moly through.
B
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