I have never seen a report of a SHT blowing up with good factory ammo. In modern times its always been some dummy that was reloading with a reduced charge that would allow the case to be double charged.
I have SA 36018 with the original bolt. Glass on glass does not adequately describe how smooth it is. It had been in a closet for 60 years or so and one day I took it to the range to show it off to my buddies and had a what the heck moment and shot a round through it just to hear it go bang. Very satisfying! I've no need to shoot it again, it fires like my other 1903's.
My shooter is a MK1. I figure if a Hatcher hole is good, a Pedersen ejection port is better.
An A3 is just sticky compared to the case hardened rifles.
Phillip McGregor (OFC)
"I am neither a fire arms nor a ballistics expert, but I was a combat infantry officer in the Great War, and I absolutely know that the bullet from an infantry rifle has to be able to shoot through things." General Douglas MacArthur