Rifle: Remington 700 Factory 26" Barrel 7mm RUM Load: Handload Hornady 175 SST Retumbo 88.5 gr Shooting History: Last time at the range, 4-shot groups (not 5 because barrel gets hot and wanders). Shooting off a bench and a lead sled, very solid rest, high level of comfort and confidence in my shooting. Have done some load development, 3 different bullets, 1/2 grain powder increments until I arrived with what works best. 200 yards - 2-1/4" out to out group 300 yards - 2-3/4" out to out group Obviously somewhat odd that my 300 was so much better than my 200, but that's just shooter error. Confusion, New Years day, I shot again. NOTHING has changed with my load or rifle. Temperature, Elevation and Wind (2-3 mph) were all nearly identical to last time at the range. Shot 3-shot groups as I was suspecting that as my barrel was getting warm, bullets were starting to wander more than I like. First Group 1st 300 yard shot, 2-1/2" from center bull at 10:00 position on the target. 2nd shot, 8" from center at 9:00 position 3rd shot, 12" from center at 9:00 position Went to check target, barrel completely cold upon return to bench. Second Group 1st 300 yard shot, 2-1/4" from center bull at 10:30 position on target 2nd shot, 8-1/2" from center at 9:00 3rd shot, 11-1/4" from center at 9:00 Take a quick minute and plot those 6 shots on the same target. Anybody else as confused as I am? VERY Consistent wandering. I assumed that the issue was that my barrel wasn't free floated as it once had been . . . dollar bill ran unobstructed all the way to the action with plenty of clearance. Everything on my rifle is tight and secure including lug, scope bases and rings . . . can't figure out what's going on. I have only shot at 300 twice now. The first time was great as the rifle was doing much better than I'd expected. This last time, is frustrating as could be. Any suggestions on where to start?