1. What is G7 to G1 Ballistic Coefficient Conversion?

The G7 to G1 conversion allows shooters to translate between different ballistic coefficient standards. G7 BCs are more accurate for modern long-range bullets, while G1 remains widely used in ballistic software and charts.

2. How Does the Calculator Work?

The calculator uses the conversion formula:

Where:

• \( BC_{G7} \) — G7 standard ballistic coefficient (dimensionless)
• \( factor \) — Conversion factor (typically ~1.28 for most bullets)

Explanation: The factor accounts for differences in drag functions between G1 and G7 standards.

3. Importance of BC Conversion

Details: Accurate BC conversion is essential when using ballistic calculators or charts that only support G1 standard, ensuring proper trajectory calculations.

4. Using the Calculator

Tips: Enter the G7 BC value and conversion factor (default is 1.28). The calculator will provide the equivalent G1 BC value.

5. Frequently Asked Questions (FAQ)

Q1: Why convert between G7 and G1 BC?
A: Many older ballistic programs and published data still use G1 standard, while modern bullets are often rated with G7 BC.

Q2: Is the conversion factor always 1.28?
A: 1.28 is typical but varies slightly by bullet shape. Check manufacturer data for exact conversion factors.

Q3: Which standard is more accurate?
A: G7 is generally more accurate for modern long-range bullets as it better matches their aerodynamic profile.

Q4: When should I use G1 vs G7 values?
A: Use G7 when your ballistic calculator supports it, otherwise convert to G1 for older software.

Q5: Does this conversion work for all bullet types?
A: The conversion works best for boat-tail bullets. Flat-base bullets may require different factors.