Just look at this on auctionarms item #6505778
Ruger #1 in 500 Jeffrey. Wow!

Ruger No1s scare me a bit. I think it's one of the most attractive rifles made, and some are quite accurate, but there are just too many horror stories floating around about the many that don't shoot well. They are certainly not cheap to accurize. There's an inherent problem with this design due to the forend. However I think the real problem may be with the barrels. Ruger seems to have more than its fair share of poor shooting barrels. I certainly wish they would or could correct it as I'd love to own one.
Ruger has started making their own barrels now so that may be a step in the right direction. Best wishes.

Cal - Montreal

I've had two Ruger #1's, and still have one.

Both were OK as far as accuracy went out of the box, around 1.5 MOA.

Both went to 1 MOA after putting a bit of rubber under the fore end screw, as recommended by Elmer Keith.

Cost to accurize was pennies.

Even BETTER,Use an O-RING on Forearm Screw to adjust Tension.

500NE would have made more sense.

Iám a new fan of the Ruger #1, have buy a used 1-A in 7x57Mauser.
Shoot great without modification, se this picture with 5shoots 140grs Barnes XFB from 80yds bench.
-Norma 204, 47grs
-Fed 215
-Norma cases
-833m/s

The No.1 is one of those things you either accept with it's warts or not. It is to me a visually appealing rifle. I am keenly aware from having owned many of them that accuracy will normally not measure up to decent bolt gun levels without luck or work. The forearm deserves much blame but so do subpar barrels. I have never understood why someone would spend a bundle on a custom gun using a factory barreled action but I have seen it done most often with No.1s. I have had custom No.1s built using good barrels that are wonderful shooters. The smith knew his way around single shots and proper bedding.
A couple flaws worth mentioning are the slow hammer fall, a protruding safety that can catch empties, a stock not designed for heavy recoil, and inconsistant firing pin protrusion that I have only recently been made aware of but that I now realize may hold more blame for inaccuracy.
If done right these rifles are nice pieces. A bit heavy at times but a decent bargain considering often good wood. The key is to hire a good smith versed in single shots. It really makes a difference.