Precision
Underwater
Ballistics
Advanced computational tools for optimizing speargun performance. Tune your band stretch, calculate shaft mass, and achieve lethal accuracy.
Ballistic Calculators
Speargun Size
Calculate optimal barrel length based on target species and environment.
Speargun Size Selector
Band Length
Determine exact rubber cut lengths for standard and roller setups.
Speargun Band Length Calculator
Band Stretch
Compute stretch ratios (300%-400%) for maximum kinetic energy.
Band Stretch Calculator
Spear Shaft
Mass and velocity calculations for various shaft diameters (6mm - 8.5mm).
Spear Shaft Calculator