I'm sure TBoxes points were valid in the days before powerful Mk6 and 7 ammo but I wouldn't be happy about shooting a rifle with just one mating surface. I wonder how anyone would feel about a bolt with just the smaller right hand locking lug mating? Nope....., neither would I.

Maybe I ought to just cut to the quick and say this. If it ain't right, then it ain't right. Or as Mr Ayley used to say. 'Near enough isn't good enough. But exactly right is near enough'