doesn't it have to be metric?
Nope. Shooting has always been standard for me. I don't see a football field in metres, I see it in yards, and that is how I guage a shot. Measuring te 400 yards of that first bull was done by a 15 year old that was 10 feet tall and stepping off "full-sized" yards, each about 5' long.
Randy,
Your feet are bigger than you think. Try on a pair of those Paris boots, and you'll see. Feet and ears never quit growing. I usually take a size 10, but 11's fit me so well, I bought 12's -- remember?