I have a Sako 270 WSM and have no regrets with this cartridge. This rifle has a set of Optilock ring and I find they are ok but mount the scope a little high. The lowest set of Optilock rings will accommodate a 50 mm scope and a little larger objective lens. I have a set of Conetrol rings on my second Sako rifle with a 42 mm scope and find it nest allot closer to the rifle. The rings also look alot better. When shooting your rifle at the range make sure to let the barrel cool between shots. The rifle will tell you what it likes as for bullets for accuracy so I would suggest to try different brands to find out. Good luck with your rifle and as far as for the scope, sound like you made a good choice...