Lee Precision cartellina Collet Neck szing Die Calibro 300 Win. Magnum, Multicolore, Taglia Unica

It’s a Lee Collet Die that works like it’s supposed to. Get very little run out using this die and since it only sizes the neck, brass last longer and is perfectly sized to fit the chamber. I would not use this if loading for more than one rifle unless you sort the brass for each one.

product came fast and is exactly as described

Awesome quality, must try them. I had .300 WM RGB die and when I got this Presicion i was surprised how much easier this was to use compare to Lee RGB. No lub required for the casing.

A few bullets i reloaded would not chamber into the rifle,so i needed to reforrm the collet,i remouved the bullet and de powder,since i did not need to decapped it,i brooke off the decapping pin,reshapped the the shell on the press with this dye,reloaded the powder and the bullet and now the shell chambers fine.So it does what its supposed to do.Bye,Lucien.

I shoot a belted magnum (.300 WM). As you full length size a belted case the brass thins over time ahead of the belt and eventually the case will split in as few as 4 reloading. The Lee collet die eliminates this issue. The lee die sizes the case neck with a precision mandrel and uses a collet to press the outside the the neck. The Lee die does not re size the case body or shoulder. As a result the case will more closely fit the chamber and neck tension will be much more consistent than with most FL sizers. The Lee die will also produce very low run out. You can get excellent accuracy without weight sorting brass and trimming case necks. After about three reloadings most belted cases will not want to feed as the case body has expanded. Use a full length sizing die with the expander ball removed to FL size the die and bump the shoulder about .010. I also recommend annealing brass every firing. Doing this I have gotten 10+ reloading and counting out of my .300 WM brass using warm loads.Some people have had issues with the mandrel and collet having some machining burs. A light polish with 400 grit sand paper than 1000 grit will fix this.Other tools to get:Hornady LNL head space gauge in order to measure once fire brass and set sizer die to bump shoulder .010 back after a few reloading.[...]