You mean you all don't have one? All the top shooters at Camp Perry keep one in their kit. Rainclouds roll in pretty fast across Lake Erie. Naw, course there ain't no such thing Rich, too many variables, size of the rain drop, how many you gonna hit at a given range, which would be wholly unpredictable, whether the rain is vertical or coming at an angle, and if it's cool enough, slush factor, etc. I bring it up when it's raining at the range, see how many takers I get. I don't doubt ordnance tried somewhere along the way though.