Might check out
Neil Jones Custom Products Universal hand decapper.
It's universal for two common different boltface diameters, and extra bases are available for stuff like Magnums or 338 Lapua.
Lightweight, strong enough for the job and you can deprime on the couch, in the car,
or even on the toilet if you so desired.
Been using the same one for over 20 years now, and my great uncle was using it before I got it. Just give Neil a call and tell him what cartridges you'll want to decap, he'll send you what you need.