Make sure the powder coat you’re using does not contain Teflon.

Here is the Wikipedia info on it. http://en.wikipedia.org/wiki/Teflon-coated_bullet

Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications. The best known brand name of PTFE-based formulas is Teflon by Chemours.[2] Chemours is a spin-off of DuPont Co.,[3] which discovered the compound in 1938.[2]
PTFE is a fluorocarbon

For the most part as long as the driving bands are good. You are good to go.
This is such a easy way to do it. Just swirl and bake. I don’t use the air-soft bb’s (Im lazy and dont want to pick them out) Just bake as per the instruction on the powder coating.
The bhn of these came out at BHN of 22.8 I plan to push them between 1853 fps and 2510 fps and size them to 309 I will also try them with and with out gas checks. Then run a 7mm bore scope and video the bore to see if we got any leading once I get the load worked up.
They were Wheel weights and water quenched.

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I was looking at a MSDS, and most of the opaque colors have titanium dioxide which could be abrasive.

Titanium dioxide pigments are harder and more abrasive than most other additives used in plastics applications.”

Titanium dioxide (TiO2) is widely used as a white pigment in many products including toothpaste, cosmetics, sunscreens, paints, pharmaceuticals, and foods.

The issue remains the TiO2, which is also an abrasive. It won’t cause wear in 1000 rounds. It does not appear to be any more abrasive than copper on the hardness charts. Whether the micro particulate form of the TiO2 will cause problems over 100K rounds more than the same kind of fricative wearing that high friction copper jackets cause.. unknown.

I will not be using the black unless I want to fire lap my barrel.

THE BLACK!!!!! It has two abrasives, the silica (MATTING)( MB 55 & MB 68)  and CARBON BLACK (Colorant). Carbon Black is an abrasive.

• Fire lap the barrel – This is probably the easiest method of all for polishing a bore.

Fire lapping involves imbedding different grits of lapping compound into bullets and firing them down the barrel at a very moderate velocity.  I use lead bullets for handguns, and copper-jacketed bullets for rifles.  The fire lapping process accomplishes a number of positive things:

• Smoothes the barrel and removes pits and burrs
• Removes tight spots
• Slightly tapers the barrel from forcing cone to muzzle. This taper keeps the bullet tightly sealed against the lands and grooves as it travels down the bore.

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Notes:

MB-68 Product Description

Low-gloss curing agent MB-68(also known as Hardener MB68)is a salt of organic polycaroxilic acid with a cyclic amidine.
1. Characteristics
Appearance: Fine powder(white)
Melting Range: 210~230º C
Purity: ? 99.5%
2. Application
Low-gloss curing agent MB-68 for epoxy resins and epoxy polyester hybrid powder coatings is used to achieve coatings with matt surface having excellent mechanical quality and wonderful reappearance.