"There are those that will say that the old Sav99 rifles could not take the 308 bolt thrust..."
Funny, I didn't say anything like that at all. I have a 1936 EG that some fool rechambered to .308 and never remarked the caliber. That, at least, made the decision to return it to .300 an easy one.
I said what Savage DID to the rifle, and WHY their production engineers decided to do what they did.
Whether it was needed or not is immaterial. What IS material is that Savage changed the dimensioning of the receiver, including strengthening it in areas, when they redesigned it for the .308 family of cartridges.
"What nonsense about beefing up the receiver."
So you're claiming what, that the receiver design was unchanged from 1899 to the end of production, nearly 100 years later?
That's an easy bet I'd win.
There were at least FOUR distinct service design changes to the receivers during the life of the gun, all internal, and all to rectify what the production engineers saw to be issues with the design at that point in time.
Not sure why that's such a hard concept to swallow.
As for bolt thrust, the bolt's locking seat is but ONE of about two dozen critically dimensioned surfaces in the receiver design.