salopian: Thanks for the chuckle. A question on terminology.
I eventually figure out but always struggle with the numeric measurements, which is why I prefer the simpler C, IC, M, IM and F. Sometimes we also use Skeet 1 and Skeet 2 (which, I believe, essentially straddle Improved Cylinder), and Extra Full to describe the tightest of chokes (for turkey hunting, etc.). We make finer distinctions with terms like "tight Mod" and "light Mod."
I also thought I understood the very straightforward Brit terms of Quarter, Half, Three Quarters and Full. But in your listing above, you mention "Cylinder, Improved Cylinder, Quarter ..." Can you explain the difference between Improved Cylinder and Quarter for this slow Yank? TT
P.S. According to a program I watched recently on The History Channel, it was the Danes, a thousand years earlier, who tended to steal your women right and left. During WWII, we Americans honored one of the lessor-known terms of the Lend-Lease Act and merely borrowed them.
