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I have an old (probably 30 year old) 2x7 Redfield tracker with amazing optical clarity. The only problem is the magnification ring is extremely hard to turn with warm dry hands, if cold and/or wet it may be impossible. I've look into sending it for inspect and advise but find the shipping (both ways) plus just the initial inspection to be costly. I set it on 4-5 power when I go out hunting and hope for no need to adjust. I was told that Redfield used seals which swelled with humidity causing the difficulty in turning the ring. I went shooting last Friday with a guy who has a new Nikon on a Tikka T3 300 mag, my old Redfield was substantially clearer and crisper. Any thoughts on the seal swelling issue?
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