Point Of Impact Calculator

POI Offset Formula:

\[ POI = \text{Bullet Drop} + \text{Wind Drift} \]

POI Offset:

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1. What is Point Of Impact (POI) Offset?

Point Of Impact (POI) Offset is the total adjustment needed for accurate shooting, calculated as the sum of bullet drop and wind drift. It helps marksmen compensate for environmental factors and gravity to hit their intended target.

2. How Does the Calculator Work?

The calculator uses the POI Offset formula:

\[ POI = \text{Bullet Drop} + \text{Wind Drift} \]

Where:

\( POI \) — Point of Impact Offset (inches)
\( \text{Bullet Drop} \) — Vertical drop due to gravity (inches)
\( \text{Wind Drift} \) — Horizontal displacement due to wind (inches)

Explanation: The equation combines both vertical and horizontal ballistic corrections to determine the total adjustment needed for accurate shot placement.

3. Importance of POI Calculation

Details: Accurate POI calculation is essential for precision shooting, long-range marksmanship, and tactical applications. It ensures shots land on target by accounting for environmental variables and bullet trajectory.

4. Using the Calculator

Tips: Enter bullet drop and wind drift in inches. Both values must be non-negative. The calculator will provide the total POI offset needed for sight adjustment.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect bullet drop?
A: Bullet drop is primarily influenced by distance, bullet velocity, ballistic coefficient, and gravity. Longer distances result in greater drop.

Q2: How is wind drift calculated?
A: Wind drift depends on wind speed, direction, bullet characteristics, and range. Crosswinds have the greatest effect on horizontal displacement.

Q3: What are typical POI offset values?
A: POI offsets vary widely based on range and conditions. At 100 yards, offsets might be minimal, while at 1000 yards, they can exceed 100 inches.

Q4: Should I use MOA or mils for adjustment?
A: Both are valid. MOA (Minute of Angle) is common in the US, while mils are used internationally. Convert POI offset to your preferred angular measurement.

Q5: Are there limitations to this calculation?
A: This is a simplified model. For extreme precision, consider additional factors like temperature, altitude, humidity, and Coriolis effect.