I had a 280gram suppressor on the light sako profiled 21 in barrel of my 6.5 Grendel-max and it gave me .3 - .5 in groups at 200 yds for the 123gn A Max at 2700fps. It was an overbarrel suppressor with 4 1/2 in ahead of the muzzle and as I carry muzzle down on the hill, became a nuisance which is the only reason I stopped hunting with it on.
