Some of the first gen cronus models have more finely graduated parallax knobs, mine is one of them (I think it’s 150 250 500 1000, or something like that). I don’t believe there’s any way to know if you’re getting the more finely graduated one unless you actually look at the knob, I don’t think it says anything different on the box/model number. My turret is pretty stiff, and being left handed I can’t see the numbers as i adjust it while my cheek is on the gun. I found the best way to adjust it is set it to infinity and then bring it down. I do not know if the btr turret is as stiff. Overall I highly recommend the scope, I switched from a gen I razor and am quite happy, but everyone has their own tastes and preferences.