1. What Is Power Factor?

Power Factor (PF) is a measurement used in competitive shooting sports to classify ammunition power levels. It's calculated by multiplying bullet weight (in grains) by velocity (in feet per second) and dividing by 1000.

2. How Does The Calculator Work?

The calculator uses the Power Factor formula:

Where:

• \( bullet\_weight \) — Bullet weight in grains
• \( velocity \) — Muzzle velocity in feet per second (fps)

Explanation: The formula provides a standardized way to compare the relative power of different ammunition loads, with higher values indicating more powerful loads.

3. Importance Of Power Factor Calculation

Details: Power Factor is crucial in competitive shooting as it determines which division a shooter competes in. Major power factor loads typically have higher scoring values but produce more recoil, while minor power factor loads have less recoil but lower scoring potential.

4. Using The Calculator

Tips: Enter bullet weight in grains and velocity in feet per second. Both values must be greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is considered a major power factor?
A: Typically, a power factor of 165 or higher is considered major in most shooting sports, but check specific competition rules as requirements may vary.

Q2: What is considered a minor power factor?
A: Typically, a power factor between 125-164 is considered minor in most shooting sports.

Q3: Why is power factor important in competitive shooting?
A: It ensures fair competition by categorizing shooters based on the power of their ammunition, which affects recoil and scoring potential.

Q4: How is velocity typically measured?
A: Velocity is measured using a chronograph, which times the bullet as it passes between two sensors.

Q5: Does temperature affect power factor calculations?
A: Yes, temperature can affect powder burn rates and thus velocity. Competitive shooters often test their ammunition in conditions similar to match conditions.