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Offline P.A. Myers

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Moly coated bullets
« on: September 20, 2010, 02:29:21 AM »
My experience with moly coated lead bullets seems to have eliminated leading. I like them and use them when I load cast bullets. I have read that the acp shooters have had problems with deposits at the end of the chamber, resulting in headspace jams. Rimmed cases dont have that problem. Some bullet makers claim you can drive these as fast as a jacketed bullet, I have not tried it. My 357 'plinkers' all chrono between 1210 and 1220 fps, and accurate. The only non-coated bullets I use now are gas-checked heavy weights.


How do they work for you?
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Offline Catfish

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Re: Moly coated bullets
« Reply #1 on: September 20, 2010, 03:18:42 PM »
I tried Molly in a .17 Rem. years ago. I got Molly build up in the barrel and spent over 24 hrs, noy all at one time, tring to get it out. As a last resort I tried fire lapping the barrel and got it to shooting again. I will never shoot a Molly coated bullet in any of my guns again!!!!!!!!!!!!!!!
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Offline P.A. Myers

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Re: Moly coated bullets
« Reply #2 on: September 20, 2010, 05:49:53 PM »
Lead bullets in a .17 Remington? Sounds tricky to load.

I have only used moly bullets in moderately loaded pistol rounds. I should have been clearer.
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Offline srussell

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Re: Moly coated bullets
« Reply #3 on: September 20, 2010, 07:54:33 PM »
help me out guy what barrel maker said shooting molly in their barrels would void the warrinty
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Offline skarke

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Re: Moly coated bullets
« Reply #4 on: September 21, 2010, 02:29:30 AM »
Moly has fallen out of favor with most, but my only experience is in .224.  I didn't have a lot of buildup, but I did have inconsistent coating of the inside of the barrel.
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Offline sr sawyer

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Re: Moly coated bullets
« Reply #5 on: September 21, 2010, 02:59:21 PM »
Regular ammonia used full strength will remove moly from jacketed bullets and the bore of a rifle in pretty short order.  Best to do it outside or you wife will fuss.  Guess how I know ;)

Ken
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Offline P.A. Myers

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Re: Moly coated bullets
« Reply #6 on: September 21, 2010, 03:24:46 PM »
Ammonia?  good tip. thanks.

P.A.
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Offline jhalcott

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Re: Moly coated bullets
« Reply #7 on: September 22, 2010, 05:34:31 PM »
  Will amonia etch the rifles bore??
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Offline PowPow

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Re: Moly coated bullets
« Reply #8 on: September 22, 2010, 05:46:55 PM »
Quote from: jhalcott on September 22, 2010, 05:34:31 PM
  Will amonia etch the rifles bore??
Shouldn't hurt steel. Ammonia refrigeration uses steel pipe. So the inside of the steel pipe is being continuously "rinsed" with ammonia. Some of those big ammonia refrigeration systems are 60-80 years old.

Ammonia attacks copper. Maybe the way it removes Moly from jacketed bullets is by eating away the first tiny layer of copper, so the moly does not have anything to hold on to. Do the copper jackets look funky after you clean them with ammonia?
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Offline JustaShooter

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Re: Moly coated bullets
« Reply #9 on: September 23, 2010, 11:45:02 AM »
Quote from: PowPow on September 22, 2010, 05:46:55 PM
Quote from: jhalcott on September 22, 2010, 05:34:31 PM
  Will amonia etch the rifles bore??
Shouldn't hurt steel.  Ammonia refrigeration uses steel pipe.

I've always heard you shouldn't leave ammonia based solvents in the bore for more than a few minutes because it can damage the bore.  I'm no chemist, so I don't really know what the danger is.  As far as the steel pipes for the refrigeration systems, are they carbon steel, stainless, or some other alloy?

Just a Shooter
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Offline sr sawyer

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Re: Moly coated bullets
« Reply #10 on: September 23, 2010, 05:18:16 PM »
The ammonia removes lubricants along with moly from the bore and the ammonia is best removed with water, therefore proper lubricants should be applied after using ammonia and water.  I would not leave ammonia in the bore for an extended period of time (over 12 hours) but it may take a few hours for it to work.

Bullets after the ammonia soak with the moly removed and after rinsing will have a mild dull copper appearance.  A little time in the tumbler and they look like NIB.  To remove the moly they need to soak in the ammonia 2-3 hours or as long as necessary for the dull cooper color to appear when rinsed in water.

Ken
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