I recall a thread on the 77 Varmint at one of the Sniper boards. There was at least 3 LE shooters that got sub-1/2" groups out of the box. But a person should expect this accuracy out of any heavy profile barrel, I think.
The biggest complaint with the tactical shooters is the oversized chambers observed on some. And when the bores are scoped, many Rugers are reported to have a rougher surface. But these observations are made by die-hard Remington shooters and I'm sure there's some bias here. The same people that say they would never touch a Ruger, are the same ones measuring them with micro-scopic bore scopes and headspace/chamber guages(???). I have never scoped my Ruger barrels or checked the chambers, but they all shoot very well. Actully, better than any other brand I've owned.
I favor the lockwork and operation of the Rugers the most, and wouldn't hesitate buying the Varmint model if I had an application for it. I will list some pros while looking over one of my own.
1) Integral scope base(no bases to mess with).
2) Four screw ring caps(not 2)
3) Positive feed Mauser bolt(allows you to shoot upside-down
).
4) Laminated stock(These are my favorite. Your Varmint will have it also.).
5) Stronger, less flexing, Investment cast receivers.(Many will argue, but the proof is in the metelurgy testing.)
6) Simple trigger design(2 parts and a spring)
7) Three position safety(3rd position blocks the firing pin & sear's movement)
8) A REAL floorplate and triggerguard(not that lightweight alloy stuff)
9) Price(Usually a little less expensive than the competition.)
7) Accuracy(There can be good/bad ones with every maker, I've just been real lucky with the Rugers.)
Actually, I have always ended up with rifles that shoot. The 2 Remington 700s I own, one standard weight(.30-06) and one bull(.308) shoot very well. I bought a Savage years ago from a friend that needed bar money. It also proved very accurate. Also, a couple Winchester M70s and an M70 action that shot great. I just like the survivalist/conservative/simpler design of the Rugers. It has to have the fewest parts of all the American made center-fire rifles. Less is Better, to me.
I think many people shoot under different conditions. I use a cast-iron suppport and premium leather bags, with the aid of a spotting scope. I see people at the range setting up on a couple sand filled, shot bags, shooting only seconds after walking down-range and back, puffing on a cigarette. I smoke also, and the heart rate gets really high just from setting up targets. But once I'm settled at the bench, I get into a zone. And where I'm getting 1/4"-1/2" groups with a Ruger, they are gitting 1"-3". And I know most of it is operator error.
Back to the subject, you should expect 1/2" groups from the bench. But that Harris Bipod will diminish it some. Slow-photography has shown them to 'bounce' up before the bullet has even cleared the barrel. The legs look like a couple of 'springs'. But I use them all the time when shooting off a vehicle hood. Better than nothing. I have two models, but this shorter "S BR" model gets used the most. It is the 'benchrest' model. It even has enough height for my AR15s when using the shorter 20-round magazines, and 30-rounders when fully extended.
Maybe not important, but did you know...
The legs on the Harris bipod look like florecent light bulbs when observed through night-vision. I can post a photo if this will be a tacticaly employed, sniper-style rig. If it's just used for varminting it will be of little imporatance.
Good Luck/Good Choice