ok im considering doing a custom bolt reciver and i cant find a real answer to a burning question i have.
why are all the raceways on everything Squared off? (attaching picture)
assuming everything else being equal as far as bearing surface area for the lugs
would a rounded profile work? like i said attaching picture
either i just found a much easier way to do the receiver (bolt will be a bit harder but meh) or im missing something and thats why im asking