I am generally not a big fan of some of the Lee equipment I have bought and used over the years, but I have really enjoyed using their trimming system that uses a cutter head and a stud that fits through the flash hole to insure a uniform length. I got one of their universal case holders, mounted it in an electric drill, and start trimming. I also have a chamfering tool handy to get rid of any burs on the inside and outside of the neck while the case is still mounted on the drill. One of the cutters mounted in a big wooden ball makes things more comfortable. All you need to change chamberings is another stud for that particular chambering.
I have a lathe-type trimmer that I used for years as well as a power trimmer from Dillon. Both work well, but I generally just use the Lee.
