DGW,,, you are correct. I should have specified pistols only. I forget sometimes that I'm thinking handguns,,, & not consider rifles.
Also,,, note that the LIGHT coating of silicone is gently applied by a pre-lubed cloth. It's a very light application of silicone to the brass,,, so I've not seen any issues with their method. I personally do not have their skill level,, so I do not do the same things like that. I'm just relaying a tiny tidbit of info,, as I was thinking on the folks who don't clean brass, or fail to pay attention to minor details. For a world class shooter,,, the tiny details can mean a difference in winning or not. I am speaking of USPSA handgun shooters here.
(I saw Todd Jarrett lose a major match once,,, due to a jam. All he had to do was shoot a fair, clean run,,, as he had a big enough lead to "cruise" to a victory. He had a jam,,, it cost him time,, and bumped him from a match win to 3rd place. It happens.)