Welcome and great post. I too have found the Federal Fusion ammo. to be very accurate in all my .308's (except one). I use the 150 gr. loads and have gotten exceptional accuracy except from an old Mossberg 800 that I bought for giggles.
Years ago I bought some "Monarch" 150 gr. .308 loads. This is a store brand for Academy in Texas. They shot so bad, I used them for plinking and for fouling shots at the range just to clean the barrel. They were absolutely terrible for accuracy in both my other two .308's and I considered them trash. The 150 grain Fusions shined. In the Mossberg, the first three times I shot the Monarch loads they clustered in a nice little 3/4" triangle and the Fusions scattered all over. I guess I am a liar about the Monarch stuff. Go figure!
