Hi there, New guy here...long time lurker...but new to posting. Here's my question. I just found out I'm going on a limited entry mule deer hunt in CO the last week of Oct. I have a .300 Win Mag that shoots great at 100 yards, but starts to spray the farther out I get. The gun has had some custom work done to it. Right now I have a Vari-X III 3.5-10x50 on it. I've heard that my problem might be related to parallax. I also have a VX-II 6-18x40 that I could rob from another gun. This scope has parallax adjustment where the Vair-X III does not. Should I try switching out the scopes? I don't really want to cough up $1,500 on a scope with only two months to purchase, mount and shoot it in. Any suggestions would be greatly appreciated. RH PS-Great Forum!!!