Re: What scope for a 7 mm STW
The 10x in your current scope is plenty of magnification for shooting out to 500yds. However, if you want more power than I would suggest skipping over the 4-14X scopes because the increase in maganification would not be enough to warrent the change, IMO anyway.
I put a 6.5X20 on one of my rifles in 7STW. I set it up for pronghorn and was fully prepared to take shots over extended range. As it turned out, I got my speedgoat @ 465yds. Go figure.
One reason that I like high powered variables on hunting rifles is that the max power setting is very useful when working up loads at the range. I rarely find a need for the max power setting when afield.