The Kievan People wrote:For some reason I made a spreadsheet of various possible gun calibers, in quarter and thirds of inches and 5mm increments. The imperial measurements are also rounded up and down to closest mm.
https://dl.dropboxusercontent.com/u/617 ... 20Guns.ods
Could be useful if you want to make some original NS gun calibers that are not completely random I guess?
158.75 mm guns gogogo