I have several sets and swear by them. I always size twice - once and then again after rotating the cartridge 90 degrees.
I have bought some Custom Lee Collet Dies, but for 6.5mm cartridges for example, I just use an off-the-shelf 6.5 WSM F/L die to neck-size. Works well, but does work the cartridge neck much more than the Collett Die. That's a good reason to anneal.
I have bought some Custom Lee Collet Dies, but for 6.5mm cartridges for example, I just use an off-the-shelf 6.5 WSM F/L die to neck-size. Works well, but does work the cartridge neck much more than the Collett Die. That's a good reason to anneal.


















































