Wind Calling Considerations for Long Range Accuracy

There are many variables that factor into effectively reading and understanding wind and how it affects long range accuracy. From mirage to how terrain and cover impact wind patterns, Vortex Edge Lead Long Range Instructor, Corey, walks us through the fundamentals needed to make accurate wind calls.
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[@DJTheMetalheadMercenary]

Corey is the man!!! Great instructional breakdown.

[@charlesludwig9173]

Well scripted video. Maybe worth a little more info: I ALWAYS appraise wind at mid range. It helped me earn a US Distinguished Rifleman Badge and an American High Power Rifleman in Long-Range Award. Also, as a CMP-USAMU Military Rifle Instructor assisting the USAMU deliver SDM Training, I note that this training as well instructs students to appraise wind at mid range because that’s where the bullet is most exposed to wind. At any rate, after appraising wind velocity and direction to determine wind value the shooter needs to know how much windage adjustment is needed to counter wind. I use the MOA wind constant formula: distance to target in yards divided by 100 times wind value in mph divided by the MOA wind constant for cartridge equals favor in MOA. For example the M855 cartridge shot from an AR-15 has an MOA wind constant of 10 at 300 yards so given a full value 10 mph wind the formula is 300 divided by 100 equals 3 times 10 mph equals 30 divided by MOA wind constant of 10 equals 3 MOA or 9 inches of favor.

[@JacobTerherst]

I’ve never shot in a 12 o’clock wind but I’ve seen a lot of 1130 and 1230. I would rather shoot in a 15mph from 3 o’clock than a 3mph switching from 1130 to 1230.

[@charlesludwig9173]

No doubt. I find it’s the 1-3 mph wind direction changes that most effect my long range Service Rifle scores, since these wind changes are difficult to observe yet will displace a bullet 1 to 3 MOA, making X-Ring hits problematic.