I do a little swapping around with bushings. My .338 Edge is loaded on a .300 RUM die. 7-300 and 6.5-300 Win are on a .300 Win die. An appropriate bushing will squeeze the suckage right of s .243 and make it into an awesome 22. 270 Weatherby does the .257. .308 can do 7-08. Is that the sort of thing you’re thinking about? It works better going down than up. Some seater stem switching can make the competition seater pull some double duty.