Great on savage 220f slug gun - Leupold UltimateSlam 3-9x40mm Rifle Scope

Purchased the Ultimate Slam after side by side comparison with Vortex diamondback. While optics were good with Vortex, the Leupold gave me about 5 more minutes of a shootable image in a sundown to dark test. I have noticed a little "out of focus" of the image at the edge of the field at the bottom only of my scope. Only see it if you are looking for it; never would have noticed it if I had been not looking for flare (there is no flare) in evaluating the scope. Mounted great on my Savage 220F 20 ga slug gun along with EGW Savage picatinny rail and Vortex rings. In my gun, 3" accutips, sighted dead on at 100yd, sets up for bottom of center ring for 150 yds, and 2nd holdover dot is on at 200 yds- set at 9 power. Great combination. I'd do it again.