I like the smaller belled scopes for mine, and given the distance limitation of the cartridge big magnification isnt necessary, though my old Weaver B-6 (3/4" tube 6x) is dandy. Ive got a few old Weaver D models too with the 7/8 tube (hard to find rings and bases for the 3/4 and 7/8 anymore) and these proportion out nicely on H&Rs.
So, for the real world today, a 1" tubed, max 32mm bell or even lower powered straight (tube dia.) objective looks and works good.