View Full Version : Barrel Life with Moly coated bullets

February 4, 2000, 07:56 AM
Anyone worked extensively enough with moly coated bullets to see an impact on barrel life. If so, what caliber/type of bullet were you using? I've heard so many different opinions on this that it's hard to tell what the truth is!

An unarmed man is a subject.

Art Eatman
February 5, 2000, 05:59 PM
Well, it hadn't occurred to me to worry about it, but if Moly is a lubricant, and the bullets are "slipperier", wouldn't barrel life be extended? At least somewhat?

I'm still getting tight groups after 4,000 rounds through an '06, and somebody else posted a 10,000+ barrel life for a high-power cartridge.

Do you shoot enough to worry about over or under 10,000-round barrel life?

February 5, 2000, 08:21 PM
I'm going to use nothing but moly in my .300 mag I'm building. I had a discussion with Gale McMillan on rec.guns a few months back about it. He seemed to think that all you are doing is laying down one type of fouling (moly) instead of another (copper)..It probably is a waste of money, since the .300 is supposed to be about gone at 1000 rounds from throat erosion.
We'll see how it goes.

February 6, 2000, 06:55 AM
Conan, The jury is still out on this one. Shilen Barrels doesn't support the use of moly, so thats good enough for me!

February 8, 2000, 03:49 AM
Sounds to me like a few barrel makers don't want us to use barrel-saving moly in our barrels. Guess they just want to sell us new barrels more often. :)

February 8, 2000, 09:42 AM
Great Link to a site that discusses the pluses and minus of moly.

George Hill
February 9, 2000, 07:50 AM
This was a subject of discussion me and Rich had at the SHOT SHOW with Gale McMillan.
Understand Gale is an absolute authority on getting the most out of a rifle...

He distains the use of Moly in a bore, or on the bullets. The reasons for this is that Moly eventually hardens after its been shot through a barrel. When it hardens - It becomes very difficult to remove. If yo cant remove it - you got a fouled barrel.
This leads to other problems such as irregular barrel wear... that over time will mean a ruined barrel before its time.

After getting this from Gale himself - I stopped using Moly in my guns.

I mean, if I went around saying I was an Emperor because some
moistened bint had lobbed a scimitar at me, people would put me away!