I just got my 3 port muzzle break on my 300wsm rem 700. The gun is pretty much factory with a light trigger and now the break. I've only shot it to 350 yards until yesterday. I was shooting with my Gunsmith we dumped some pumpkins off at 600 yards because I've never used the turrets on my millet scope. After re zeroing at 100, I typed the info on my phone it said adjust for 8.85 MOA for the first shot hit the stem so I backed off 2 clicks and smacked it the next 4 shots. Roughly a 4inch group at 600 yards!! Im shooting 185bergers but my box is almost empty and im thinking about switching to 210vld's? Does anyone have an opinion how they would shoot out of my gun?