BallisticVector

Estimate distance to a target of known size from how big it appears in your reticle. Enter the target's real size and how many mils (or MOA) it subtends for width or height — the solver returns the range. Example: a 20" target that appears 1 MIL tall is ~556 yds / 508 m.

Calculate Distance

Typical real-world dimensions for reference. Click a measurement to load it into the calculator above.

Target	Measurements (click to load)

Generate a range card of firing solutions across a distance band using your current rifle, projectile, and environment inputs. Pick a start/end range and an increment, then Generate — the result is a clean table you can screenshot or print.

Generate Data Card

Print / Save PDF

Practice getting rounds on target. Pick a rifle & bullet — your own profiles, or a preloaded factory cartridge (AR-15 5.56, AR-10 .308, 6.5 Creedmoor, 7mm PRC, .300 PRC, .50 BMG and more) — choose a mode, generate a scenario, then apply your elevation and windage correction and take the shot. See where the bullet lands, adjust off the impact, and fire follow-ups until you hit. The simulator computes the correct solution from the selected rifle & bullet to score each shot HIT or MISS.

Random weather (wind & atmosphere vary each scenario)

New Scenario

Select your rifle and projectile, enter the distance you are zeroing at, then click on the target to mark where each shot landed. The assistant averages your group and gives the scope correction (elevation & windage) to move your point of impact to center.

Tip: selecting a saved rifle/projectile profile ensures the correction matches the gun & load you are zeroing.

Click the target to mark each shot. Each grid square = 1". The bullseye (center) is your point of aim.

Undo Last Shot Clear Shots

Tip: calculate a solution first so the predicted values auto-fill. Then enter what you actually dialed and click Calculate.

Elevation (up/down) truing

Windage (left/right) truing

Right is positive (+), left is negative (−). Stored as a constant Zero Offset (ZO) on your profile.

Set MV offsets for barrel condition. Offsets are relative to the base MV (e.g., cold bore = -15 fps means MV is reduced by 15 fps on a cold barrel).

Advanced solver parameters for fine-tuning trajectory calculations.

+ Add Step

Choose the color scheme for the application.

Toggle physics components on/off. Disabled components are excluded from the solution and hidden from results.

Show or hide elements on the Rifle / Projectile tab.

Show or hide input fields on the Solution tab.

Choose the unit system for distance, velocity, energy, and drop in the solution output.