ApexLOAD PRO Reloading Calculators
One hub for every ApexLOAD PRO ballistics and load-development tool — from internal ballistics to shot group analysis.
Internal Ballistics
Simulate chamber pressure, muzzle velocity and barrel time for any load recipe.
Trajectory
Calculate long-range trajectory, drop, drift and energy with G1/G7 ballistic coefficients.
Parametric Powder Search (PPS)
Find the best powders for your caliber and bullet based on fill rate, pressure and velocity.
Optimal Barrel Time (OBT)
Tune your load into an OBT node for tighter groups and lower vertical dispersion.
Target Velocity
Reverse-engineer the powder charge required to hit a target muzzle velocity — perfect for subsonic loads.
Powder Temperature Sensitivity
See how powder temperature swings from -19 °C to 51 °C affect pressure and muzzle velocity.
Load Comparison
Compare up to three saved diary loads side-by-side across charge, velocity, pressure and accuracy.
GenAI Reloading Tool
Let ApexLOAD's GenAI engine propose safe, optimised load recipes tailored to your components.
Shot Group Analysis
Upload a target photo and get automatic group size, MOA, mean radius and impact analysis.