I agree that out to 200 an inch and a half will do.
For me, 1 inch or less or the gun stays home. In fifty odd years I've never violated that standard with a rifle/load that I intended for anything more than fifty yards. I almost always stay inside 200 yards when I kill deer. I do however keep that standard so that I have "insurance" in case I make a mistake judging distance, judging wind, or the light is just messing with my head. That I know the rifle is that accurate allows me a lot more range if I have tested the gun/load and I decide I need the range. I am hunting with a rifle I can do whatever I might need to within reason. I trust that and I am more comfortable making much more difficult shots when I chose to do so. With the vast majority of today's rifles, that is no longer such a high standard, nor hard to attain.
