ORIGINAL: SwampCollie
Based on what? Personally I think that Remington's rifles blow Ruger's totally out of the water. The fit, finish, and accuracy are far and away better on Rems. If you get a good shooting Ruger, you probably got the 1 in 10 gun. About one in ten will be a real nailer. One in ten will also be a total dog. The other 8 will all shoot sub 2" groups.
I must speak up in defense of Ruger. But first, I must say that my experience with Ruger rifles is pretty much based on ones made before about 1990. The ones I've tested, both M77's and No. 1's, would all shoot 1.5 MOA or better with handloaded ammunition. Some much better.For example, my No. 1B 7mm Rem Mag will shoot several loads, using 140, 160, and 175-grain bullets, into 1" @ 200 yards. Most others, including a No. 3 in .30/40, are at least half as good.
I will admit that Remington BOLT-Action rifles have an excellent reputation for accuracy. Some of their others aren't so great, especially their semi-autos!
I can't speak for factory ammo, because I just don't use any!