I have a Sako Kodiak in 375 H&H and a Sako Grey Wolf in 9.3x62 that both work well with the Low optilok rings. They are a bit higher than most low rings by nature though. If you do have a problem with it hitting the scope, you can turn the scope 45° so the windage turret is now your elevation turret and your elevation turret is now your windage turret on the left side of the scope. This will clear the ejection port completely and you shouldn't have an issue at all. But if you do that, obviously you would need a standard duplex scope with only 2 turrets. As to the 85 being control round feed or not, it is kind of a hybrid action. It is crf in a way, but it doesn't grap the cartridge quite as soon as a mauser style bolt does. My rifle is very reliable, so I wouldn't give that a second thought. I also have a Winchester 70 416 Remington mag. It is an excellent rifle. Feeds and functions flawlessly. And, it's one of the most accurate rifles I own in any caliber. I like the 416 Remington mag and if you're a hand loader, it's much less expensive to feed. Pressure is not a problem if you keep your loads in the 2300-2350 fps range with a 400 Grain bullet. It also burns about 25 less grains of powder to accomplish the same ballistics as the Rigby, which leads to less recoil. But, since I'm a lover of Sako rifles, it would be hard for me not to hit the Sako Brown Bear button.