I am shooting a Remington VLSF with a 22" barrel with a 1:9 twist - probably falls somewhere between your two. As far as having the turret made by Leupold, it is about $90 to have them make you a turret that has exact mark offs for distance based on a certain load, barrel ,etc.. I guess some guys might think it's a waste of money, but I have blown $90 on things a lot less useful (bar tabs, etc.). I like the idea of having it right there on the turret as opposed to trying to memorize the clicks or taping an index card to the stock. To each his own I suppose.