If all else fails just use jacketed bullets. I really liked what “mikld” said about the deflaring die, the word crimp gets a lot of reloaders off on the wrong track. To call it a deflaring die would solve a lot of the problem with the straight wall cases used in auto loaders. Also I have always deflared in a separate step but I have decided that to deflare while the bullet is still moving it’s last few thousands does no harm.