JB, years back I had a Sako Deluxe Sporter AII, had a sporter bbl, thinner than the Foresters, it also had a 'ring' about a foot from the muzzle you could see on the outside as you looked down the bbl. I fired a 7 shot group one afternoon using red and white box Federal 100gr, and put 5 of 7 in 1.1"....oh, at 200 yds. '

Never shot a BAD group with any 6mm bore, or 243 for that matter. Shot many groups around 1/2" and some better around 3/8" - handloads at 100 yds. Yes, factory ammo works fine in most cases.