1. What is Arrow FOC?

Front of Center (FOC) is a measurement that describes how much weight is distributed toward the front of an arrow. It's expressed as a percentage of the total arrow length and affects arrow flight and stability.

2. How Does the Calculator Work?

The calculator uses the FOC formula:

Where:

• \( L \) — Total arrow length (inches)
• \( AMO \) — Balance point from nock end (inches)

Explanation: The formula calculates what percentage of the arrow's total length is in front of the exact center point of the arrow.

3. Importance of FOC Calculation

Details: Proper FOC improves arrow flight, accuracy, and penetration. Most target arrows have 7-15% FOC, while hunting arrows typically have 10-20%.

4. Using the Calculator

Tips: Measure arrow length from nock groove to end of shaft (not including point). Measure balance point by finding where the arrow balances on a narrow edge.

5. Frequently Asked Questions (FAQ)

Q1: What's the ideal FOC for Gold Tip Pro arrows?
A: For Gold Tip Pro arrows used in hunting, 10-15% FOC is recommended for optimal balance of speed and stability.

Q2: How does FOC affect arrow flight?
A: Higher FOC increases stability and penetration but reduces speed. Lower FOC increases speed but may decrease stability.

Q3: How do I adjust my FOC?
A: Add weight to the front (heavier points, inserts) to increase FOC, or reduce front weight to decrease FOC.

Q4: Does arrow length affect FOC?
A: Yes, since FOC is a percentage of total length. The same balance point on a longer arrow will result in lower FOC.

Q5: Should I include broadheads in FOC calculation?
A: Yes, always measure with your complete arrow setup including points/broadheads as they significantly affect balance.