A friend of mine is selling me his 338 RUM Sendero and is going to stick one of his Leupolds on it as well. I was wondering which would work better for long range shooting/hunting. 1. VX-II, 4-12x40 AO, M1 knobs, duplex reticle 2. VX-II, 4-12x50, M1 knobs, duplex reticle The 50mm objective seems clearer to me. Is there any disadvantage to not having the adjustable objective? Thanks for any thoughts.