You will have a bit of trouble getting the K4 mounted usefully on the Ruger. The eye relief ends up being too short unless you really like to crawl the stock.
Although I found this to be the case with the K6 version of the Weaver Classic on a LONG action Ruger M77 (and your Ruger is a shorty), I didn't have any trouble with the K4 on a long action. In fact, I just ordered another K4 to put on a Ruger M77 270 Win.
I think they are great scopes for the money. In any case, given the choice to run either the Revolution or VX1...I think it's a toss up.
