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All Springer/NP/PCP Air Gun Discussion General => Projectiles => Boolit and Pellet Casting => Topic started by: waydeo on April 16, 2022, 01:09:21 PM

Title: Powder coating slugs questions
Post by: waydeo on April 16, 2022, 01:09:21 PM

I powder coat for my powder burners  (9mm,40, .223,.308) and I size them before powder coating.  How do you guys size for air rifle slugs ; before or after powder coating  ?

Title: Re: Powder coating slugs questions
Post by: EdinGa on April 16, 2022, 02:32:45 PM

Quote from: waydeo on April 16, 2022, 01:09:21 PM

I powder coat for my powder burners  (9mm,40, .223,.308) and I size them before powder coating.  How do you guys size for air rifle slugs ; before or after powder coating  ?

I size after I powder coat most of the time. It really depends on the situation.

Title: Re: Powder coating slugs questions
Post by: Greg_E on April 16, 2022, 09:56:08 PM

I've been testing to size 0.001 under, then powder coat. So far this works. But I also size down to correct diameter, powder coat, and size again. Depends how far off they are. If they are right at size, Ill probably coat them and then size to cut the number of operations.

Title: Re: Powder coating slugs questions
Post by: Bob Pratl on April 17, 2022, 05:57:24 AM

If I needed to resize more than .003", I would resize .002" before and then .001" after powder coating.
This prevented flaking of the coating and less effort to resize. I always resized after coating.