I haven't worked much with belted cases, is anyone needing to use those collet dies that size that last little bit before the belt? That would be an additional cost unless I built one myself.
I've had one for awhile, and have gotten some good use out of it. Having said that; almost all of the use was solving man-made and odd-ball problems.The main reason that I got it was I had a sizeable pile of .257 Weatherby brass that had been fired in a rifle I no longer had. Resizing it in a FL die wouldn't get it into my remaining .257. The Willis tool saved enough brass to pay for itself the first day. Other instances were a number of rifles that were cut with a non Saami reamer with a reduced base. In return for no discernible advantage, it opened up a situation where the chamber was smaller than typical reloading dies. The collet kept me in the game until I rechambered them in disgust. Another is chambers that are cut so disgustingly over size that when sizing there is a lot of brass that has to go somewhere, and it could go where a die won't reach. This is the principal use given in the dies promotion.
In regular, non oddball use a reloader can get along just fine without ever have even heard of the Willis die and never miss a beat. The situations where it is useful aren't particularly common, and for the most part you can ignore the belt.