Tools
Ballistic Comparison
Compare up to 5 loads side-by-side: trajectory arcs, drop tables, wind drift, and recoil index. Adjust zero, wind, and atmospheric conditions in real time.
NATO vs Warsaw Pact
Paper targets don't shoot back, so this is as close as most of us want to get to settling it.
5.56 NATO 62gr7.62x51mm NATO 147gr7.62x39mm5.45x39mm
U.S. Service Rifle
The U.S. Army has always known exactly what rifle cartridge it needs. It's changed its mind five times.
.30-40 Krag.30-06 Springfield7.62x51mm NATO 147gr5.56 NATO 62gr.277 Fury
WW2 Allied & Axis
Every man on every side was somebody's son. This one's for all of them. Even the ones who were dicks about it.
.30-06 Springfield.303 British7.92x57mm Mauser7.62x54R7.7x58mm Arisaka
The AK Family
Designed by a guy with a 4th-grade education. Adopted by half the world. Your AR has feelings about this.
7.62x39mm5.45x39mm7.62x54R
Modern Intermediates
Everyone agreed 5.56 wasn't perfect. Nobody agreed on what was. Several billion dollars later, here we are.
5.56 NATO6.8mm SPC6.5mm Grendel6mm ARC
Anti-Materiel
When the memo says "engage the vehicle, not the crew." Barrett built a business on that distinction.
.50 BMG12.7x108mm Russian.416 Barrett.408 CheyTac.375 CheyTac
Solid = supersonic Dashed = subsonic Transonic (crossing Mach 1)
at — yd Locked
| Load | DROP (in) | VELOCITY (fps) | ENERGY (ft-lb) |
|---|
Add a load above to begin
Search by caliber, manufacturer, or bullet type
Pattern spread face-on board at selected distance · 30" test circle reference
Choke
Distance
Pattern statistics at selected choke · across distances
Wind
mph
Atmosphere
Density ratio: 1.000
· Speed of sound: 1126 fps
Options
Units
Drop display
Chart view
ft
Click chart to
place target
place target
Arc mode: click the chart to set target distance. Target height = elevation difference. Shows bullet flight path from muzzle to target.
Statistics velocity · energy · drop · wind drift · each load through its own drag model
Recoil index momentum-based · gun-weight independent · lb·s
In the app
Your range work, on the record.
This tool shows the data. Vault keeps yours — the zeros, loads, and sessions you actually shot, by firearm and by optic. Part of tracking what you own and what you shoot.
Optics zero records
Log every zero by firearm and optic: distance, load, conditions. Pull it up before a hunt instead of trying to remember what you shot in September.
Session ballistics
Log your actual range performance per load per gun. Over time, you'll see which loads actually perform at distance for your specific barrel.
AI range coach
"What's my drop at 300 yards with my Hornady 147gr?" The AI knows your zero, your load, and your conditions, and answers in plain English.
Export your data
Export your zero records and session logs to CSV. Your ballistic data belongs to you, not locked in a proprietary format.
