I shot some 53-grain Varmageddon / AA 2700 loads this morning. Based on what we're told here, I started out at 42.5 and had to stop at 43.25 grains where I saw some awesome accuracy potential but also signs of overpressure starting at 43.0 grains. I did not shoot anything beyond 43.25 grains (which gave me the best group of the day). Gonna try again ASAP, starting way back at 41.0 and going to 42.2 grains, 0.3 grains at a time. I was getting well over 3900 fps at 42.5 grains and see no real advantage to going beyond 43.0 grains unless that's where accuracy lives.
One thing I noticed was that barrel definitely did not heat up as quickly (I was shoot in 85-degree weather). Accuracy was not bad, just saw nothing really outstanding. I'll keep on playing with it.
