I have a standard 77/22H and it shoots very well, with limited number of reloads. 10.5/296/40gr V max will shoot in the 1/2" group range and was quite effective on prarrie dogs out to 200 yards. It did shoot poorly with multiple other reloads but it shot that load well so that is what I shoot. It also shot the 45 grain Hornady Hornet bullet with 296 & 4227. One other reload of the 40 V Max and 296 powder, too hot to share, shot well but case life was very short.
I have owner several 22 Hornets over time , but no 22 K's, and all of them were picky about reloads.