# Bullet Comparison Calculator

The Bison Ballistics calculator is a modern ballistics calculator for sportsmen. To use it, just pick two bullet from our library, fill in the appropriate information and click "Calculate".

## About the Bullet Comparison Calculator

### How do I use the bullet comparison calculator?

Just select two bullets, and then enter a muzzle velocity for each one. The calculator will generate trajectories for each bullet and output comparison data.

### Why are there so few inputs?

The comparison tool is a simplified calculator to get a basic idea as to how two bullets will perform. The calculator makes the following assumptions:

 Zero Range The zero range isn't relevant to this calculation - it reports total drop, which is adequate for comparison purposes. Wind Speed The wind speed is assumed to be 10 mph. Wind Heading A wind from 9 o'clock to 3 o'clock is assumed (full value left to right from the shooter's perspective). Sight Height Like the zero range, sight height isn't relevant to this calculation - it reports total drop, which is adequate for comparison purposes. Temperature The temperature of the air is that of the IACO standard atmosphere - 59 ºF. Pressure The absolute (station) pressure is assumed to be that of the ICAO standard atmosphere - 29.92 mmHg. Relative Humidity The absolute (station) pressure is assumed to be that of the ICAO standard atmosphere - 0%.

### What if I want a more detailed calculation?

Then use the fully featured Ballistics Calculator. It allows for more inputs so you can get a more accurate trajectory that will apply to your specific conditions.

### I'm trying to see if I should switch bullets. Is there a way to estimate the velocity of the bullet I'm considering?

Yes, there are a few to do that without actually purchasing the bullets and testing. The first is to use our quick and easy Velocity Estimation Calculator, which will give you a very rough idea of what you can expect. Other, potentially more accurate ways would be to use a reloading manual or QuickLOAD to get a more detailed estimate. QuickLOAD is probably going to provide the most accurate estimate.

### Want to Support the Site?

If you enjoy the articles, downloads, and calculators on the Bison Ballistics website, you can help support it by using the links below when you shop for shooting gear. If you click one of these links before you buy, we get a small commission while you pay nothing extra. It's a simple way to show your support at no cost to you.