If these dont have any lube on them, powder coat them then resize and load them as fast as you want. I load powder coated bullets in lots of calibers and have had no leading issues. Bullets that have gas check help control leading more than plain base.

In fact ive shot lead bullets for 10+ years in my Ruger Super Redhawk 454 Casull and have never had any leading. A properly sized bullet that is sufficiently hard shouldn't lead your barrel. 45/70 all the way to 223 and all barrels are clean with no leading using a bore scope to confirm i dont have any.