Easy to apply
I use an old 1 pound powder bottle from Hodgon powder actally three of them fit in my Lyman vibrator. I put 100 bullets in each with 1/4 of steel shot or copper bb's with 5 to 10 grains of HBN start the vibrator for 2 hours and there coated by the impact of the BB's and the bullets.
Very easy to do .
I use plastic peanut butter jars, 100 155 Scenars then fill to about 80% with BB's, 1.5 to 2 hrs in the vib tumbler, then I pour everything into a steaming pan I bought from walmart for 20 bucks to separate the bullets and BB's, the bullets now look like powder donuts, I then polish the bullets by tumbling them again with shredded news paper for around 30 minutes, this leaves the bullets looking hazing like, but very slippery.