470 Rigby

"Remember, British Proof is not an ultimate test of burst pressure - and says nothing about strength reserves"

IMHO, at least the British proof all guns made with a severe over charge over what a normal shell / cartridge
would give.

What do you mean by "strength reserves" ?

Re "Technology transfer from the military arms industries, particularly from Germany after WW1 was rapid, and
steel quality, both for barrels and actions of sporting rifles and guns did improve"

Granted - however, the use of "iffy" is probably what I was refering to - if the steel pre WW1 was "iffy"
why are so many English guns still in use that were made pre WW1

I am still happy to shoot mypre WW1 doubles.

500 Nitro