Virtual Bench

A free interior-ballistics simulator. Enter your cartridge, powder and charge and it estimates muzzle velocity and peak pressure — as ranges, never as authoritative numbers.

⚗ Experimental feature — use these results for virtual testing only. Do not use them to build or fire live ammunition.

This is a simulated estimate — NOT load data. It is not a substitute for current published data from powder and component manufacturers. Always cross-check official manuals, start below the published starting charge, and work up slowly while watching for pressure signs. Reloading is inherently dangerous — you assume all risk.

Virtual Bench is free, but you'll need an account so we can record your agreement to the safety terms before you run an estimate.

Join free Sign in