I've shot benchrest for years and started shooting Danzac / tungsten disulfide coated bullets in a 30BR last year. I shoot a full match of around 120 rounds without cleaning and no loss of accuracy. I have plenty of Danzac and a dedicated tumbler for the application on the custom benchrest bullets.
This stuff works so great I'm wanting to try it on some cast lead bullets for my 44 mag. Anyone done this? Thanks.