I purchased a Winchester Model 70 7mm. Rem. Mag at the end of last deer season. Now is the time to fit it with some new optics. With this rifle I will primarily be hunting whitetails in 'cutover' and on powerlines that can reach up to about 500 yards. My question is what magnification should I get with my scope? Will a 44 or 50 be better for my field of view to see game farther away? I just realized I may have posted this in the wrong section so could someone move it for me.