Hi- 1st post here, but I use the same handle on other shooting forums. I shoot NRA high power a lot, and am moving from Service rifle to a M70 bolt action match rifle. I am going to put a scope on for load development, then use the scope on a long range rifle I just got, a good deal on ! ) and occasionally a Win 52d . I have narrowed down my choices to a weaver 6-24 or more probably a nikon buckmaster 6-18x. SWFA has both demo's and factory refurbished of the Nikon; the refurbished ones are $20 more. So what makes them worth $20 more ? My guess is that they know it works properly, the demo SHOULD,they don't know why it wouldn't) but who knows how much it was handled or fiddled with . Can anyone enlighten me ? scopes are something I haven't messed w/ much ....TIA