For hunters, PRS and F-Class shooters
Extreme spread lies.
Mean radius doesn't.
Every box of ammo, every load workup, every braai-side brag gets judged by the two worst holes on the paper — a number that gets worse the more you shoot, on the exact same rifle. Mark your target, get the statistic that actually holds up in millimetres and MOA or MIL, and the scope clicks to zero from it.
No account needed. Metric by default. Results in under a minute. See the two numbers diverge ↓
Drag the slider. Watch them split.
Same simulated rifle, same true precision, the whole way from 2 shots to 20. This is the entire argument in one interaction.
Same rifle, same ammo, same true precision the whole time — only the shot count changes. Extreme spread is just the worst two holes on the paper, so it has more chances to find a bad pair every time you add one. Mean radius averages every hole, so it holds still. This is the number every box of ammo gets judged by, and it's lying to you.
Shoot the target the way you actually shoot it
Straight-on from the bench or leaning out at an angle from a barricade — doesn't matter. One photo, phone or camera, however you framed it.
You don't need another feature. You need to stop guessing.
The load you dropped for no reason
Five shots at 100 m, one flyer you called wind, extreme spread jumps to 50 mm. You cross the load off the list. Mean radius on those same five shots barely moved — the load was fine, the sample was small.
The rifle you shouldn't have sold
A rough group at the range gets blamed on the barrel instead of a called-flyer, a hot chamber, or a rest that shifted. Without the group center and the honest spread, you're guessing which one.
A season of range data you can't trust
Every target lives in a different notebook, a different app, a different photo roll. Nothing's calibrated the same way twice, so nothing's comparable — and comparable is the entire point of tracking it.
A 3-shot group doesn't tell you what you think it tells you
Every number on a target — mean radius included — is an estimate from a small sample, not the rifle's true precision. We show you the range that estimate could actually be in, at 90% confidence. No competitor in this space puts that number in front of you.
That upper bound is nearly 3.7× the lower one.
Same rifle. More shots is the only thing that narrows this.
Ballistic calculator
From the Karoo to a 1 000 m PRS stage, know your dial before you shoot
Altitude changes everything
Zeroed at the coast, hunting on the Highveld? At ≈1 750 m the air is roughly 15–20% thinner and your bullet drops less. Set altitude or station pressure and see the density altitude your rifle actually shoots in.
Metres, centimetres, clicks
Drop and wind in cm, MOA or MIL, and the exact clicks for your turret — 1/4 MOA by default, 0.1 MIL if that's what you run. Velocity in m/s, energy in joules.
Print it, tape it to the stock
A compact, high-contrast DOPE card sized for the stock or the notebook. G1 or G7, transonic ranges flagged, and a truing tool for when your real come-ups disagree with the box.
Estimates from a validated point-mass solver. Always confirm on paper before relying on them.
Ammo is expensive. A rifle you sold over one bad group is more expensive.
The analyser and the ballistic calculator. No account, no trial, no card. Mark a target, get your numbers.
Want synced history across devices? See Premium pricing — billed in rand by card via Paystack. The free tools stay free either way.