My by-line was so apt!
Its a real can or worms, surely the manufacturers have enough muscle to get a clear cut answer?, maybe not.
If you could classify the over 6lb pistols as short barrel rifles that could resolve one problem....hmmm
Which begs another question - "What defines a gun as a pistol or a rifle" - it can't be ft lbs.
Thanks everyone for your insight.
Michael
Hope springs eternal