Its gonna be the Mark 4 (4.5-14x50) LR M1 or the NF nxs 3.5-15x50 in second focal plane. This is a two part question. First is, as far as clarity and field of view, which is better optics. Next, I would like to know if I could share this scope between two rifles. Both are for long range hunting and punching paper out to 1k. Once i put in the work that is. So say your at the range and want to work both rifles. With the right rails and rings would this setup be able to hold consistancy at all times? Hope somone can help!