Well, I guess it depends on your definition of a tack driver.
Of the near dozen Ruger rifles I've owned, only one "approaches" being a tack-driver, but since it's a "pile-driver" (ie: .375Ruger "Hawkeye"), it doesn't really matter that it's a near MOA shooter with ammo it "likes".
My M77/22Hornet (24"hvybbl S/S and laminated stock) after a lot of "coercion" (free-floated barrel, trigger job, glass bedding reciever) has after 2,000-3,000rds finally settled down to shooting near MOA with ammo it "likes". However 300-400rds I have to replace a wire ring I fit in between the bolt-halves so it will extract fired rounds..... Yeah, I know, I should send it back to Ruger for a new bolt, but, it works "as is" with my little modification....).
Only Ruger M77's I've seen that were "shooters" were a friends circa 1974 .270wcf that was near 1-hole with 130gr Hornady's over 55.0gr of IMR4350 for 3-shot groups, and a M77MkII stainless .30/06 that I bought for a friends wife who gave it to her husband as a christmas gift in '06. With 53.0gr of RL15 under a Sierra 150gr ProHunter would shoot MOA for 3-shots....
However, a M77/22Hornet carbine I had would shoot 4"+and no coercion "fixed" it; A Ruger #3 in .22K-Hornet would shoot 4"+ before, and after K-Hornet rechambering and other misc. work; A .257Robt M77 shot 2.5"+ after misc. work, and two Mini-14's that were 6"+ (.223 and a 7.62x39). Not to mention a gunsmith friend who's circa 1983 .338winmag wouldn't shoot under 5" with ANY load. He sent it back to Ruger. They returned it with a letter explaining that it "met their standard" for accuracy... He promptly ordered an "exact replacement" bbl from E.R.Shaw with exact contour, ect. With the new bbl, it shot sub-moa, w/o any additional work such as stock, trigger, ect. with same ammo as before. After that and an issue he had with Ruger SP101's as an Alabama Marine Police armorer, He wouldn't even touch a Ruger, even to "repair" one.......
If you are considering a .300WSM, get the Winchester M70. Especially one built in Spartenburg, SC by FN...... Much more likely to get a decent "shooter".
If you want an inexpensive "shooter" get a Savage M110 or Marlin X7S- or L.
For roughly the same price point, a Weatherby Vanguard are essentially guarenteed to shoot MOA or better.
Why do I keep buying Rugers ???? I like a challenge, and they're available used; "CHEAP"...... My .375 Hawkeye was less than the cost of 200rds (10boxes) of factory ammo.....it had sat on the used shelf for over 2yrs. price had dropped to 50% of original "asking" price. I got it for even less than that.... It's not the rifles that are expensive these day's....it's the ammo!!!
Do you get the message ????