Have been trying to dial in my T/C Compass, 308 win for some time. I hope I will answer all concerns first about this gun. 1. full free floating barrel (hot and cold) 2. Vortex PST II, 6-25X50 3. Scope rings have been lapped 4. 22" barrel 5. 1:12 twist rate. 6. shooting 168g HPBT hornady, 43.0 g Varget, 2625 FPS avg. My last visit to the range supprised me with the results I got. This gun had been shooting 4 MOA at 100 yds for some time. changed out scope, got the trigger down to 2.5lb pull, tried different bullet weights and powders. The target below is my shooting results at 100 yds with the above load. What i found strange is the accuracy and barrel temps. 1. First group was at the 5 O'clock target. barrel temps about 65 deg. 2. Second group at 11 O'clock, barrel temps about 80 deg. 3. Third group at 7 O'clock barrel temps was 143 deg. 4. Forth group was dead center and barrel temps over 160 degrees. I was always under the impression that the hotter the barrel the groups got worse.