1. What is FOC in Bowhunting?

FOC (Front of Center) is a measurement that indicates how much of an arrow's total weight is located in the front half of the arrow. It's expressed as a percentage and affects arrow flight and penetration.

2. How Does the Calculator Work?

The calculator uses the FOC equation:

Where:

• \( balance\_point \) — Distance from nock end to balance point (inches)
• \( length \) — Total arrow length (inches)

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

3. Importance of FOC Calculation

Details: Proper FOC improves arrow stability, accuracy, and penetration. Most bowhunters aim for 10-15% FOC for optimal performance.

4. Using the Calculator

Tips: Measure arrow length from nock groove to end of shaft (not including point). Find balance point by balancing arrow on a pencil.

5. Frequently Asked Questions (FAQ)

Q1: What's the ideal FOC for hunting arrows?
A: Most hunters find 10-15% FOC works well, though some prefer higher FOC (up to 20%) for better penetration.

Q2: How does FOC affect arrow flight?
A: Higher FOC arrows are more stable but may drop faster. Lower FOC arrows fly flatter but may be less accurate.

Q3: Should I include broadhead weight in FOC calculation?
A: Yes, the broadhead affects the balance point and should be installed when measuring.

Q4: Can FOC be too high?
A: Excessive FOC (>20%) may cause arrow flight problems and reduce speed significantly.

Q5: How do I adjust FOC?
A: Add weight to front (heavier points, inserts) or reduce rear weight (lighter nocks, shorter arrows) to increase FOC.