Dan,
With the disclaimer that everyone's body geometry and preferred cheek weld are different, I think it will difficult to use a canted rail (since they increase height at the rear. Scar has measurements for each rail on his site) without some kind of raised comb.i suppose you could go with a smaller objective scope, and use lower rings, but I know I wouldn't like the trade offs.
The increased height rail is new, I would reiterate the above. Note I have plenty of clearance for the bolt handle, although it's a little difficult to see with my crappy photography. That's a much larger, aftermarket bolt knob, so it looks closer than it is.
Best ammo depends. I've shot my best groups @50yds with SK Rifle Match, but that was just one lot, others not as good. Center-x, SK Pistol Match, and SK Std+ are all very consistent, low .3s, high .2s, with the occasional high .1. I just buy what I can find, a buddy also has a 457 (still in the AT-One stock), so we trade off. So far we haven't had any of the decent ammo not shoot in at least one of our guns.
Longer range, SK Long Range Match, SK Pistol Match, and esp. one lot of Midas from before these crazy times has been the best. I don't shoot groups as often at 200+, mostly just dial and bang steel. A 1 incher @ 100 gets boring (even with my 10/22); @ 200 I hang a 3, 2, and 1 incher. The 3 is fairly easy if no wind (or consistent), and the 1 is tough.
@300 same thing but with a 6, 4, and 2.
Note, I'm at altitude (approximately 5500 ft, and very dry).
All for fun, and talking s*** to the centerfire guys who can't imagine a .22 shooting that far.
Our range goes out to 500 meters, so I'm seriously considering going with a bigger rail, and a scope with more internal travel.
Kind of rambling, hope you find something useful.
As always, feel free to ask anything. Like I tell my grandkids, if I don't know the answer, I'll make something up.
Dave
