This does underscore the issue of just what 'acceptable' accuracy is; what is OK for one may not be for another, all rather subjective without having established some criteria other than an individual's past experience.
E.g., I once had a Colt's revolver that was acceptable to me, I could walk cans pretty decent, but when I started shooting with some NRA Bullseye shooters and learned (more than) a few things, it was no longer acceptable even at its best. Not that walkin' cans aint fun, I just came to demand more, and a more inherently accurate gun is just as good at walkin' cans. Same with my 22 Martini MkIII International with a 20X, it'll shoot flies IF I do my part

. But that info isnt very meaningful to you if I dont say if it is at 10 or 100yds.
Now, please dont take me wrong, if whatever your piece is doing is good enough for you, I am very happy for you. Only you can determine what is practical accuracy for you.