I use one to resize 6BR, 30BR and 284Win brass at the range. Saves on multiple presses or die swapping. The change I made to mine ( a common modification ) was to undercut the bottom of the washer on the center screw so I can lock the head down so there is no play in it. The center post is proud of the head by about .010" of an inch to allow it to index freely which also allows the head to cock ( very slightly ).
I like mine very well.
Gregg