20 Practical........requires a bushing die & 2 bushings, 20 cal decapper rod.
20 Tactical.........dies easy to get, but requires fire forming BUT easy to do.
204 ruger...........dies easy to find, no special reloading, load & go.
6x6.8...............can get standard dies OR redding bushing dies and 2 bushings again. Loaded ammo available.
6.8 ................Other variations....need bushing dies & bushings.
264/6.5 grendel.....standard dies easy to get, no case forming.
6.8 spc.............Dies easy to find, load & go.
Should be kept simple and not have to dive into reloading/forming extras a person would hsve to buy especially if they are not that involved in reloading