Blue Bullets Crimp

Good Evening, I reload using Blue Bullets, .40 180 RNFP. I was pulling bullets to check my crimp and noticed there is a line where it is crimped at. No coating is scraped off but there is a line. On the Blue Bullets web site, it states: “The perfect amount of crimp will hold the bullet in place but not affect the coating. The best way to check this is to pull a loaded bullet and examine the coating. You should see just a very slight impression (almost none) in the coati

Coating damage in the crimp zone seems to be mostly irrelevant at typical distances and velocities used in USPSA. Anyone shooting long enough has seen sideways bullet holes in targets and the spiral-comet marks from some coated bullets, but its surprising how much abuse a bullet can take and still fly straight, so without in-flight high speed video, I'd say those are from other causes. Here's some 147gr 9mm Blue Bullets I mangled-- scraped the coating off on one side on some, scra