BTW - A front sight hood isn't necessary for peep sight use.
What I meant to say was the higher ramp is necessary. My Ranger's front bead directly in the barrel dovetail isn't tall enough for a receiver peep. 5D Williams peep worked OK on my pre 64 factory ramp with 150-170's, but 110 plinkers ran out of vertical adjustment. A taller bead on the pre 64 put the 110's in play, but was off center high in the hood.
Now that my eyes are older, I'm thinking about giving up on the 110's and going back to the the original bead, centered in the hood. The concentric hood fills the gap between the big peep and little bead nicely.