I didnt say you need one, but you say they dont make a difference, a think they do.

But there are a lot of crappy guns with crossbolts, so there will be bad examples.

On a modern steel action there hardly are a need for anny third bite if made in a rimmed cartridge but still the complex jaeger is made to secure the action a bit further.
My point is there is allways a need to get the buyer so stronger apperence will probably sell more guns, funny thing is that one seldom sees it in o/u guns.

Also if you dont think its of use take a h&h and remove the underlugs and i will do the same thing with one of my loose fitting crossbolt guns and then will pop of a couple of rounds each.

Btw. chapius only uses one bite in there smaller frames, and it seems to work fine, are they better then the h&h then.