My 6.5 shoots the 147gr eld-m very well. I got sub moa at 300yds with a lower quality scope. I do have a barrel tuner for my AR .223 target rifle. I was messing around with different muzzle devices and was noticing my accuracy with FGMM 75gr loads was fluctuating. I started doing some research on harmonics and I bought a RAS tuner. It was pretty impressive how my groups opened and closed as I adjusted the tuner. I shot 9 3 round groups and there was definitely an effect with the adjustment of the tuner. I went out to 200yds with it and was doing sub moa with a semi auto gas gun I put together myself. I may have been lucky but the tuner definitely did something. On the other hand I tried the same thing with my 6.5cm bolt gun and the tuner had no effect on groups, they were all sub moa. If I stretched it out some more maybe I would have seen something but being able to hit a 4" piece of steel at 500yds consistently I called it good and left it alone. FYI it's a Tikka T3 Tac-A1 and is pretty solid.
So I'm not sure if it's me, the gun, the cartridge selection, the moon phase, or something else.
So I'm not sure if it's me, the gun, the cartridge selection, the moon phase, or something else.