Yes, I do expect MOA at 300yd. Might be ok with 1.5MOA at 600 but it is more of a wind doping problem than bullet problem. Yes, most folks don't do that. I do.
MOA at 300yd is a 3.141" group. MOA at 100yd is a 1.047" group. MOA at 600 is a 6.282" group
With care on my part I routinely get less than that at 100 and 200 yd. And, yes, I have several groups that have been 0.5" at 100yd.
The left target I was sighting in my plinker load, 8gn of Blue Dot (~1000fps). It is good like this at 200yd as well.
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