In order to participate in the GunBroker Member forums, you must be logged in with your GunBroker.com account. Click the sign-in button at the top right of the forums page to get connected.
Options
views on molly coated bullets= yes= no =maybe
CHEVELLE427
Member Posts: 6,750
just wondering anyone have an opinion on molly coated bullets 223 & 308.
better then copper, are they any good , yes no.
how are they on the barrel
better then copper, are they any good , yes no.
how are they on the barrel
Comments
They were a hot iten ammong match shooters a number of years ago. The fad didn't last. It seems that the "molly" likes the steel of the barrel more than the copper of the bullet. The result is a lot of build-up of molly that is a pain in the * to remove. Just wasn't worth the effort.
+1...nasty stuff to try and clean. The worst was in the front of the barrel (throat) and then to clean it you had to push it all the way through. I've seen a number of .223 barrels the shooter gave up on cleaning and just got a new one...not using moly the next time around.
Alas, it was difficult to determine if the improved barrel condition had anything to do with the molly bullets or if it would have occurred anyway.
My notes say the moly bullets were slightly faster: 150-300 fps, depending upon the load, but no more nor no less accurate.
There were no cleaning issues.
For someone who wants the very last fps possible, go for it. Otherwise, I'd not bother.
Molybdenum disulfide:
My experience with Moly goes back to its very first introduction into the field of competitive shooting. I had several protracted discussions with the bullet engineers at Norma regarding their testing and their findings before I committed to using these bullets in my barrels. Then there was the painful testing and experiments with Moly for the next couple of years in an attempt to quantify data and information. Unfortunately, that road led to a dead end...
MoS2 was an adventure in learning for the shooting public. As with most 'Wow-factor' discoveries, Moly was supposed to be the saving grace for barrel life. It was to have added length to a barrel's accuracy lifespan through its low coefficient of friction.
The proper method of use was to coat the bullets and then wax them to prevent carry over to our hands. The the barrel was to have been 'fouled' by applying a moly-suspension to the inside of the barrel and abrading it into the steel itself. In this manner, the barrel and bullets were prepped for the ultimate in low friction delivery.
I use some moly coated bullets for some very specific reasons and under very specific circumstances. For the most part though, I stick with naked bullets in naked steel barrels and I do just fine whether in competition or shooting for work or fun. To save a lot yammering and foolishness, I am supplying a couple of link which contain articles about moly and moly use:
http://www.shootingsoftware.com/moly.htm
http://www.shootingsoftware.com/ftp/molytech.txt
Best.
ADDED:
The newest adventure in coated bullets is:
Hexagonal Boron Nitride Powder (HBN)
"Hexagonal Boron Nitride powder has a structure and properties similar to graphite. It has become one of the most popular dry lubricants due to its lubricating properties and inertness to molten metals and salts. It is used in many different applications, especially as a mold release agent. Hexagonal Structure Boron Nitride improves the strength and holdability of the present powder composites."
This was originally used by David Tubb on his line of 6mm 115 grain bullets manufactured for him by Sierra.
This is a longer but somewhat rambling discussion of the origins and application of HBN:
HBN as a Bullet Coating
There are some other links at the bottom of this blog.
Best.