Sectional Density Calculator
To calculate sectional density, divide the mass of the projectile by its cross-sectional area.
The Sectional Density Calculator is a crucial tool for shooters, hunters, and ballistic experts. Sectional density (SD) measures the mass of a bullet relative to its cross-sectional area. It influences a bullet’s ability to penetrate targets, making it a critical factor for ammunition selection, especially for hunting and defense purposes.
Formula
SD = M / A
Variable | Description |
---|---|
SD | Sectional density |
M | Bullet mass (in pounds) |
A | Cross-sectional area (in square inches) |
Solved Calculations
Example 1: Calculating SD for a Bullet with 0.2 lb Mass and 0.05 in² Cross-sectional Area
Step | Value |
---|---|
Bullet Mass (M) | 0.2 lb |
Cross-sectional Area (A) | 0.05 in² |
Sectional Density (SD) | 0.2 ÷ 0.05 = 4.0 |
Example 2: Calculating SD for a Bullet with 0.15 lb Mass and 0.03 in² Cross-sectional Area
Step | Value |
---|---|
Bullet Mass (M) | 0.15 lb |
Cross-sectional Area (A) | 0.03 in² |
Sectional Density (SD) | 0.15 ÷ 0.03 = 5.0 |
What is Sectional Density Calculator?
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