No I havent done that Adam but I have examined the barrel internally with a endascope not sure thats the right spelling. Anyway the bore is very dark with lots of pitting and signs of corrosion. There is very shallow rifling from the throat up to the front barrel band after that the bore is almost smooth.
I examined a 8mm mauser and a smle at the same time the rifling on them was deep and the full lentgh of the barrel.
Going to check the rest of my milsurps when I get time.