B-square had/has mounts that fit in the rear military sight base for foreward mounting scopes in Jeff Cooper's favourite location. Thus mounted, the clip-ears are there for rapid loading using 5-shot military clips.

I shoot most of my CF guns single shot when hunting myself - at most, an extra round in the mag. well. The clip-fed rim-fire gopher guns are different, of course. Centre-fire gopher guns are single shots only.

I've never needed a barrage of lead to kill a deer, moose or bear - but have seen with other people that merely having a full mag. available results in multiple shots with poor shooting and hitting poorly if at all.

Even when guiding, bolt closed on an empty chamber & at most, 2 rounds in the mag., except when carrying a lever gun - then usually full mag-tube for some odd reason. Never needed them, and that should have been a lesson to me.