I will be going on a Utah LE bull elk rifle hunt this fall. I know I'm darn lucky to have drawn the tag and that is why I want to do everything I can to prepare. My question is how important is it to have and adjustable objective for elk hunting out to 700 yards? I have a 338 win mag with a leupold 2.5-8x, it shootsgood but not great yet about 1". I also have a 30-06 that shoots very well Accumark, it shoots 168 gr barnes tsx bt 3020 fps as good as I can shoot and 180 accubond very well also. How much better would I be likely to shoot at 500-700 yards with 16x top end and adj. obj. compared to 8-10x top end and no adj obj? Thanks for any help. Ps I already have a 4200 elite 4-16 x40 and am thinking about the elite 6500 scope also.