Reply To: 50 meters, Walther LGV, Benjamin Trail NP 177, Benjamin Trail NP 22

Forums Springers, Pumpers, C02, & Vintage 50 meters, Walther LGV, Benjamin Trail NP 177, Benjamin Trail NP 22 Reply To: 50 meters, Walther LGV, Benjamin Trail NP 177, Benjamin Trail NP 22

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oldspook
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Wind drift for a CPHP at 50 yards in a 1 MPH wind at 45 degrees is about 0.3″.  So if you had a 3 to 8 mph wind and you were not holding off for wind the group would string about 1.5″ left/right and there would be some vertical component as well due to spin drift.  That part varies with the rifling twist and muzzle velocity in combination with the wind.