For reference only, that's well outside the dot. Advertising says 4MOA, in reality it's closer to 3.3-3.5MOA. Same emitter as in the M-series, but in a shorter body, so the dot is between 3 and 4MOA.
Call it 4MOA anyhow, that's 4.188" @ 100yd.
Cut that in half for 50yd, that's 2.094". Call it 2"
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Further reference: size of the dot doesn't realistically affect accuracy from a mechanical or visual standpoint. If you use, say, the 12 o'clock position of the dot and consistently rest it on the same POA on the target every time, and with all else being equal, your rounds will group within the MOA capability of the barrel/round combo being fired.
Molon ginned up a lovely thread about that very topic, with photos, some time back in regard to 4MOA dots, and I know that I've done it with the 9MOA dot on the RMR atop the TA11SDO with Mk318, Mk262, M855. Referencing the reticle for group size is about equal parts myth (used by folks that don't know better) and excuse (used by folks that do, but count on its surface plausibility).
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You'll likely start to see better results with some training and more trigger time. What you have right now isn't really indicative of anything except the need for both, which is something that applies to pretty much anybody. Going for 2" groups at that range on demand isn't an unreasonable goal, at this point.

