As I have mentioned several times, the wind is a fundamental aspect and it is also very important whether we are talking about the group or the hit the target same size as the group. Making a groups is much easier than hitting targets of the same size as a group.
I will put here some data and simple overview. Used .22 JSB 18.1 grain, wind size 1km/h (abou 0.6 mph) wind direction from 6 or 9 hours, ie full wind G1 0.041.
The column Drift (mRad) shows what side deviation in mRad this wind is made. Since you have only half a target on one side, so when requesting 1 MOA accuracy = 0.3mRad, the number in the column must be less than 0.15 MRad (half MOA).
From the table it is seen that for accuracy of 1 MOA at a maximum error on the wind 1km/h can be fired at a distance of 70m.
For 1.5 MOA up to about 110m.
In practice, of course, the wind can also blow at a different angle of than 90 degrees and will not have the maximum effect.
But this shows perfectly what I try to say here. If you want to know what your system is capable of (Airgun, Pellets / Slugs) then you must first start based on physical data. In reality it will always be worse on average
I say on average, as there may be times when the wind is almost constant, or you are lucky to the perfect estimate of the wind at the moment. Therefore, I not say that someone could not shoot sometimes a amazing result, but that's just luck, nothing more.
Although I wrote that it is not a comparison, so just little info: top .22 slugs will have at the same conditions, for the required accuracy 1 MOA, can be fired at a distance of 480m vs 70m for pellets.
