I just recently purchased a used Winchester model 70 30.06 extreme weather 3 round. Just a couple of questions. This is the first scoped rifle I have ever owned ( I have owned guns all my life, but never one with a scope). The scope on this gun is loose in it's mount and I need to sight it in. I have never done this before and any tips and tricks would be helpful. Secondly, is there any way too increase the magazine capacity? Any help would be greatly appreciated.