Sounds like you need higher rings. The nightforce brand is actually Tenebraex and it threads into the objective. I believe it hangs down too though if your barrel gap is small won't work.
I have scope-cap clearance issues w/Kimber 84L and 2.5-10x42 NXS. I used the Tenebraex cap, cut out a notch for the bbl and ran a strip of electrical tape around. Might not be as "finished" as some folks want, but, it works. The Obj is covered and nothing contacts the bbl.
