Long billed cap of some type, part of a rain poncho etc... will help at least keep the water out of the sights/optics. Its one reason we used to keep the nutty looking caps in the stool. Rain doesn't cancel a match but it can make it better as most folks just fire away, give up and are ready to get out of the rain. LOL
180 isn't bad under the conditions.
We can keep Larry Root and all his idiotic blabber and user names on here, but we can't get Ralph back..... Whiskey Tango Foxtrot, over....
