It depends somewhat on the model. A base carbine in a flimsy plastic stock I'd expect 2-3" at 50 yards. A deluxe sporter, a little better. A LVT, 1-2". A heavy Target, .75-1.5". Based on my experiences, that's what I'd expect. I generally don't shoot beyond 75 yards because of the terrain of my property, so my scopes are not what I'd consider big.
There are a lot of variables, and Ruger varies more than most. Triggers vary widely, even in the BXs, but the very best factory Ruger trigger I've encountered came in a Target model produced a decade ago. If I'd never experienced a Kidd trigger, I'd have been happy with it. Barrels are a crapshoot. I have a Compact that shoots very well - with a Kidd Single Stage Complete trigger group in it. The hammer-forged barrel on the Target model shoots a little under .5" at 50 yards with CCI SV, and isn't real picky on ammo. I have three Ruger carbine barrels laying around because they got replaced with aftermarket barrels that yielded much better accuracy.
The first 30 years or so that I owned a 10/22, I used a typical wood-stocked carbine with a VQ competition hammer and sear, with an inexpensive scope mounted in see-thru rings. It was a plinker - soup cans at 25 yards. During that same era, my squirrel rifles were bolt guns in .22-250. I didn't really care about owning an accurate 22lr rifle. That changed when my shooting environment changed, first with a 25 yard commercial indoor range, then with a move to the current home in the mountains where I can shoot in the back yard. That carbine got a new barrel , stock, scope, and eventually a new trigger. As time went by, it was joined by four more Ruger 10/22s and a Kidd Supergrade. Of the six, two have factory Ruger barrels and stocks. Three have Kidd barrels, all six have Kidd triggers. Three are lightweight guns, three are heavyweight bench guns. All are scoped with variable power AO scopes ranging from 3-9 up to 6-18, because I like to be able to see where my shots hit. I shoot paper, golf balls, steel, and live varmints both from a table and in hunting situations. I also have other rimfire rifles in bolt, semi-auto, pump, and lever actions from CZ, Marlin, Savage, S&W, Henry, and Remington - but the 10/22s are my favorites.