Quick Answer
For 7mm Rem Mag, consider a 3-4 MOA wind offset adjustment, depending on the specific conditions and terrain, to ensure accurate shots on elk.
Wind Offset Considerations
When shooting the 7mm Rem Mag, wind can have a significant impact on bullet trajectory. To effectively compensate for wind, it’s essential to consider the wind speed, direction, and terrain. As a general rule, a 1 MOA deflection occurs at 10 mph (16 km/h) of wind at a 90-degree angle to the shot. For a 7mm Rem Mag, we can assume a 3-4 MOA wind deflection at 10 mph of wind.
Wind Offset Charts and Calculations
To determine the exact wind offset, you can use a wind deflection chart or calculate it using the following formula: wind deflection (MOA) = (wind speed x 0.0175) x (cos(angle) x 100). For a 7mm Rem Mag, we can use the following chart to estimate the wind offset:
| Wind Speed (mph) | Wind Offset (MOA) at 90° |
|---|---|
| 5 | 0.875-1.25 |
| 10 | 3-4 |
| 15 | 6-8 |
Adjusting for Terrain and Angle
When shooting in mountainous terrain, it’s essential to consider the angle of elevation and the wind direction. A 10 mph wind at a 45-degree angle can deflect the bullet by 4-5 MOA, whereas a 10 mph wind at a 90-degree angle can deflect the bullet by 3-4 MOA. To accurately compensate for wind, it’s crucial to consider the specific conditions and terrain.
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