Exterior
Flight
Drag across the transonic band, gyroscopic stability, spin drift, wind and air density. Every round, every metre.
a = ρv²·CG1(M)·π / (8·BC·703.07)
Status: active
AlliedBallistics
Everything that matters happens in the first few milliseconds. We model it, build it, and measure it.
01 / Research
Advanced ballistics research
Primer to last fragment. Exterior, transitional and terminal behaviour, modelled from first principles and checked against the range. What we can’t show here, we don’t show here.
Transitional
Air
Muzzle blast, bow and tail shocks, the turbulent wake. The air a round disturbs is data, so we measure it.
μ = arcsin(1/M) · c = √(γRT)
Terminal
Effect
Penetration, expansion, yaw, cavitation and fracture, through gel, steel, glass, wood and layered materials.
rmax = √(E′ / πK) · vbl = K d0.75 t0.7 / √m
| Reference load | Muzzle velocity | Energy | Mach | Cone half-angle | Stability Sg |
|---|---|---|---|---|---|
| 9 mm 124 gr FMJ | 350 m/s | 492 J | 1.03 | 76.5° | — |
| 5.56×45 55 gr FMJ | 988 m/s | 1,739 J | 2.90 | 20.2° | 3.89 |
| .308 Win 150 gr FMJ | 860 m/s | 3,594 J | 2.53 | 23.3° | 2.96 |
| .338 Lapua 250 gr | 884 m/s | 6,330 J | 2.60 | 22.6° | — |
| .50 BMG 660 gr | 887 m/s | 16,824 J | 2.61 | 22.6° | — |
02 / Prototype
Model first.
Then metal.
Hardware is expensive and range time is slow. We do the cheap thinking in software, then build only what the model says is worth building.
- P-01
Specify
Requirement, threat, constraint. Written down before anything else happens.
- P-02
Simulate
Trajectory, stability and terminal effect explored in thousands of variations.
- P-03
Build
Short runs of the configurations that survive.
- P-04
Instrument
Chronograph, high-speed imaging, witness media. The model has to agree.
- P-05
Iterate
Where it doesn’t agree, the model is wrong. Fix the model, then repeat.
03 / Simulation
The flight of a round
Our public simulator. Pick a load and a target, then watch it in slow motion with every equation open, from the primer to the last droplet.
- Loads 38 rounds, 10 ga to .50 BMG
- Barrel internal ballistics, length vs. velocity
- Flight G1 drag, wind, spin, stability
- Air shock cones, blast, wake
- Targets gel, steel, glass, armour, wood, electronics
- Method every equation, live, toggle on
04 / Contact
In person.
Only.
No phone. No email. No address. If you need to speak with us, find us at one of these. We won’t confirm which ones in advance.
12–14 Oct 2026
AUSA Annual Meeting & Exposition
Walter E. Washington Convention Center, Washington, DC
US
30 Nov – 4 Dec 2026
I/ITSEC
Orange County Convention Center, Orlando, FL
US
19–22 Jan 2027
SHOT Show
Venetian Expo & Caesars Forum, Las Vegas, NV
US
26 Jan 2027
C4ISR & Beyond
National Arts Centre, Ottawa, ON
Canada
20 Apr 2027
Simulation & Training Forum
National Arts Centre, Ottawa, ON
Canada
3–6 May 2027
SOF Week
Tampa Convention Center, Tampa, FL
US
2–3 Jun 2027
CANSEC
Ottawa, ON
Canada
Dates as published by the organizers. Confirm with them before you travel.