Hi metguru,

This has become an excellent conversation IMO............ please be aware that I am a boring old fart and that Steve R Jones is a "juvenile delinquent" in my pre-x286 mindset

Wow, how did I miss that? Its 39 mm, not 33. That would lead me to believe that at least one of you two doesn't have very much 'real world' experience with such things.
I believe that you are perfectly correct there, but I am going back almost 40 years, when I lived down South and attended Bisley Camp every week (Bisley is our version of Camp Perry).

My mate Dave Hopcroft (Hoppy) was an avid collector of military rifles, and had acquired an "AK47", which he wanted me to try (I shared his interest, and was good enough to represent my country back then)........It was Russian and genuine WWII.

He told me that the Russians made them when the USA came into WWII, so that their troops could use the US .30cal carbine round.............it used the exact same ammo as his M-1 carbine.

I only tried it at 200x but the M-1 was a better weapon IMO. well, I could shoot better with it 'cos it didn't smell of commies

Hell's teeth guys!!! this place is starting to be like a community again ?????????????