Standard. There is almost no HV with significant accuracy that I have found. HV in almost any brand is accuracy compromised
I have almost always found this statement to be the case as well. Not this time.
Maybe try a box of the high velocity one time. Rimfires are fickle to start with, and yours may or may not like it. But I was nothing short of shocked by it. Especially in my 10-22, as well as a CZ455.