I use the collet die for my 300H&H I find that I get much longer brass life not full sizing. These always strecth right at the belt, the Lee die lets me keep the fired sizing and reset the neck. Well worth the money IMHO 300H&H brass is not getting cheaper. The crimp dies work well in my 44 Mag better crimp than standards. Some don't like Lee's, but for myself they work just fine.