I know that hardcore accuracy freaks cut the chamber for their rifle to the 22 brand and type they plan to use. Most people test a bunch of brands to find which one their particular firearm likes. Regardless of which way you go the general principal is that fit between the ammo and the chamber matters a lot when you're trying to shoot competitively.
At the same time a better rifle will get better accuracy out of low-grade ammo than a lower grade rifle. Even when it's not the preferred ammo, a CZ 455 will do better than a stock 10/22 with the same ammo.
With that in mind I have 2 questions:
1. When I was looking at aftermarket barrels for the 10/22 several of them state that they are for match grade ammo only. Some specifically state that the CCI stingers should not be used. In essence they're trading in versatility for accuracy. What are good options that will wring the most accuracy out of any ammo? I want good accuracy but I don't want to trade being an omnivore.
2. More generally, in my head right now I have the idea that a better barrel will take you to 1-2 MOA with most ammo and that to get below 1MOA you're looking at specialization to the point where you have to feed the 22 good ammo. Is that an ok understanding or have I goofed somewhere?