I'm a fan of the Lee collet neck sizer, too. JimBob86's signature line applies here,though. Read and understand the instructions before you use this die. If you just screw it in the press and go, I can just about promise that you'll have problems. The only people that I know of who have problems with this die did exactly that. It's a whole different approach to sizing than the "swage as it goes in" sizing dies. I use it on my own 22-250 ammo, and get about twelve loadings before I have to full length size. I don't use real hot loads, so your mileage may vary.