Are there any rules in F-TR regarding a shade for your barrel? I took my .223 out to the range today to see what it could do in 20-shot strings. Short story . . . it got hot. The first string I fired at 100 yds wasn't much of a problem. Over 20 minutes, temperature was easily manageable. By noon, when I started shooting at 200 yds, the sunlight intensity had increased, and the barrel simply would not cool. It might look silly, and people might laugh at me, but would it be within the rules to setup a mini tent shade to keep the barrel out of direct sunlight in a F-TR competition?