Powder Coating

Is there an effective/reliable method for removing moly from cast bullets? I have an old box of moly lubed pills i decided I didn't want to use because at the time I read a few stories about it being hard on barrels.
Regardless, I'd like to clean or etch them so they will take a powder coat. Has anyone done this?
 
Unless you use something dangerous the best you can do is dissolve whatever binder is holding the moly on. Acetone and mineral spirits will typically act as a solvent for most anything.
 
I have heard that moly can be difficult to reliably remove so wasn't sure if acetone would be worth trying.
I have powder coated previously, but only using newly cast bullets that had never otherwise been treated.
 
I boil (sometimes twice) any slug that has some other coating or groove lube on them to begin with and then swish them in methyl alcohol ( common gas line antifreeze) at least once and then allow to dry in the sun.

when done boiling you want to pour the water off the bullets....don't fish the slugs through the surface water, that is where the melted lube will be and you will just contaminate your bullets again.

I have used this several times when wanting to PC commercially bought bullets that were already factory lubed with great success....that was until yesterday had my first coating failure in 10 yrs of coating and i used the above method. Don't know yet what caused the failure to get the coating to stick, bullets seemed very clean but may have been high humidity was the issue.
 
FraserValley said:
What is a good - budget - powder gun to get ?

Baking them is leading to so-so results.
Click to expand...

I don't know what you mean by "so-so results". But probably, not certainly mind you, you're doing something wrong. Or there's something wrong with your coating process, humidity, etc.

I've been coating my bullets for years now since powder coating hit the scene, doing nothing other than giving them a shake in a proper canister with the paint powder inside. The only problem I had was one of my first batches ended up with TOO much powder adhered, and by the time they were finished baking they were too big for any sizer I had of that caliber.

For what it's worth, there's a massive amount of information on powder coating bullets over on the cast bullet forum. An entire subsection for the cast bullet crowd, including dozens of threads were people asked for help with a problem.

Looking at the thousands of guys in that forum (53+K), the vast majority have chosen to do their powder coating using the method of swirling them in a plastic container that has powder inside. If that was troublesome, a lot of those guys would be posting instead about the new powder coating gun they bought.

I do believe that my results improved significantly after I switched from the Princess Auto powder I first used to whatever product that Smoke over on the cast bullet forum sells. I didn't change anything else other than switching from the Princess Auto powder. For all I know, other guys say they've found Princess Auto/Harbour Freight is the best powder coat you can get. I also found that the powder that performed best for me was the clear, even though it didn't give any of the cool colors that the arts and crafts bullet casters are going after.

Obviously, nothing wrong with buying a PC gun to have around the house. But a few hours spent browsing the powder coating sub-forum over on that website can't possibly hurt your attempts to sort out your powder coating problem.

https://castboolits.gunloads.com/forumdisplay.php?184-Coatings-and-Alternatives
 
Thought I would get through this season, but it looks like I'm going to be a bit short, so I cast a coffee can of 130gr. RNFP .38's and just finished sizing them after hitting them with Tool Blue.

20210912-153944.jpg


Auggie D.
 
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