Quote Originally Posted by chieffool View Post
Does this mean (if expressed as a caliber) that .177 is actually 17.7 x 1/100th of an inch?

Yes, that's right. 0.01 inches means 1 hundredth of an inch, so 17.7 of these comes to 0.177 inches. Althernatively you can think of .177 inches as 177 thousandths of an inch, or as engineers would say: "177 thou'.