Why would any firearms manufacturer or ammo manufacturer or ammo retailer or wholesaler want ammo loaded past SAAMI specs given that the folks who buy factory ammo ain't the sort to chronograph loads ? The customer would never know he was getting " high performance " stuff .
The nine locking lugs are similar in design to " Acme " threads encountered on stuff designed to handle really high tension loads exactly like the load a rifle bolt experiences . The threads on drill pipe tool joints come to mind as well as " buttress " threads on other pipe designed to be run downhole .
As far as the thread from the wby website where the guy experiencing tight bolt lift says he and his Dad have " fired over 800 rounds of factory ammo in preperation for their upcoming hunt " ---------- that's 2000 bucks worth of ammo .
