Making Better Shooters
Through Science
Engineering-grade ballistics tools and science-backed content — from a firearm design engineer.
The Toolkit.
Calculators and ballistics tools to get you on target
Free tools don’t require an account but don’t skimp on performance.
★ Subscribe for an enhanced ballistics calculator with custom ballistic trueing, full reloading load development lab, and cloud saved rifle and load data with session tracking. Open any paid tool to subscribe or see what it offers
Basic Ballistics Calculator
Full G1/G7 trajectory solver. Enter your bullet, conditions, and zero — get a complete drop and drift table.
Run a solution →Group Analyzer
Measure extreme spread, mean radius, and SD from POA directly from a photo of your target.
Analyze your group →Hit Probability Calculator
Know your odds before the shot, from velocity SD, group size, and target dimensions.
Calculate probability →MOA ↔ MIL Converter
Instant unit conversion with real-world reticle context and scope click counts built in.
Convert now →Advanced Ballistics Calculator
RK4 solver, bullet library, Coriolis, spin drift, and cloud save. The full physics engine.
Open Calculator →Load Development Lab
Charge weight and seating depth tracking with auto-graphing and cloud save across sessions.
Open Lab →My Rifles & Loads
Every rifle and load you’ve saved, organized in one place, tied to your bullets and Load Lab data.
Manage Rifles →Try It Yourself.
Enter your numbers and watch the drop update live — no login required.
latest post
Hit Probability at Long Range: The Math Behind Making the Shot
When a shot is taken, at any distance, the bullet never goes exactly where we are aiming. There is always some dispersion. Our goal is to minimize that as much as possible, through form and…
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Getting Started in Reloading: The Gear
There is no doubt that reloading your own ammo, especially when it comes to long range and precision shooting, comes with many benefits. But the difficulty for those who want to start is usually based…
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Standard Deviation in Reloading: What SD Really Means
Standard deviation (SD) is an often-used term among precision shooters and reloaders, but most people who use it don’t have a true understanding of what it means. If understood and used correctly, it can be…
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Articles breaking down all things long range and precision.
Long Range Shooting
Fundamentals, positions, wind reading, DOPE, and practical marksmanship.
Explore →Ballistics
Trajectory, BC, drag, spin drift, Coriolis, transonic flight, and environmental effects.
Explore →Reloading
Load development, SD vs ES, seating depth, powders, primers, and precision ammo.
Explore →Rifle Engineering
Barrels, actions, triggers, suppressors, accuracy, recoil management, and design.
Explore →Latest Video
Meet The Engineer
Kason Church
Mechanical engineer and firearm design engineer passionate about helping shooters understand the science behind precision shooting.
- Mechanical Engineering Background
- Firearm Design & Development
- Long Range Shooting Competitor
- Ballistics Research
- Reloading Enthusiast
- Teacher & Content Creator
New Articles. Calculator Updates. Ballistic resources
Science-backed ballistics articles, reloading deep dives, and calculator updates — Stay up to date and make yourself a better shooter, through science.