A diabolo solved as a diabolo
Wasp-waisted pellets don't share a bullet's drag curve. PelletArc's GA/GA2 laws and slug/wadcutter models come from airgun wind-tunnel work — not a single rifle BC stretched to fit.
PelletArc vs Strelok
The airgun-first Strelok alternative.
Strelok is a brilliant ballistic calculator — but it was built for rifles. If you shoot a PCP, a springer or a .22LR, PelletArc models your projectile with real airgun drag laws, calibrates the BC from the drops you actually see, and gives you the holdover in one tap. And you can bring your Strelok profiles with you.
Pay once No subscription Works offline Strelok import
The short answer
Keep Strelok for centrefire. Reach for PelletArc when it flies like a pellet.
The two tools overlap, but their centre of gravity is different. Strelok is rifle-first with a vast reticle library; PelletArc is airgun-first with physics and a workflow tuned to sub-12 ft·lb holdover at 35 m and slug trajectories downrange.
| What matters to airgunners | PelletArc | Strelok |
|---|---|---|
| Purpose-built airgun drag laws (GA, GA2, slug, wadcutter, round ball) | ✓ | Custom BC + G-functions |
| Velocity-dependent BC truing from your observed drops | ✓ | Manual custom BC |
| Sourced pellet catalogue, tagged by data quality | 1,680 | — |
| Answer-first, single-screen solve | ✓ | Form-driven |
| Reticle library | 15 (mil & MOA) | Very large |
| .22LR rimfire (RA4) & rifle (G1/G7) | ✓ | ✓ |
| Works fully offline · no account | ✓ | ✓ |
| Pricing | Pay once | Paid app |
| Imports your Strelok profile | ✓ | n/a |
Comparison reflects PelletArc's feature set and Strelok's general, rifle-oriented design. Strelok is independent software; PelletArc is not affiliated with it.
Why airgunners switch
Three things a rifle calculator can't give a pellet.
Your BC, not the box's
Log two or three observed drops and PelletArc fits a velocity-dependent BC curve to your barrel and pellet. Your DOPE becomes the calibration — the strongest answer to airgun BC scatter.
One glowing answer
Profile, range, holdover — the whole solve on one thumb-friendly screen, readable in the sun and kind to night vision. No drilling through tabs at the firing line.
Bring your work with you
Already dialled in on Strelok? Import it.
You don't have to rebuild your setup. PelletArc imports a Strelok profile — rifle, scope height and pellet — then you can true the BC against your real groups and carry on from where you left off.
- Profiles also export as plain JSON — your data stays yours
- No account, no cloud lock-in, no re-entry of every field
- Read more in What is BC truing and the airgun ballistics calculator guide
Fair play
When Strelok is still the right call
If you're primarily a centrefire rifle shooter, want one of the largest reticle libraries anywhere, or already know Strelok inside out for your rifles, it remains a superb tool. PelletArc isn't here to replace it for powder-burners — it's here to be the better fit the moment your projectile is a pellet or a slug.
FAQ
PelletArc vs Strelok — quick answers
Is PelletArc a Strelok alternative?
Yes — an airgun-first one. Strelok is an excellent, rifle-oriented ballistic calculator. PelletArc is built specifically around pellets, slugs and .22LR: it ships dedicated airgun drag laws, calibrates the BC from your own observed drops, and answers in one tap instead of a wall of fields.
Can I bring my Strelok data into PelletArc?
PelletArc supports importing a Strelok profile so you do not start from scratch — your rifle, scope and pellet setup carry over, then you can true the BC against your real groups.
Does Strelok model airgun pellets?
Strelok works from standard drag functions and a custom ballistic coefficient, which you can apply to a pellet. PelletArc instead carries wind-tunnel-sourced airgun drag laws (GA, GA2, slug and wadcutter models) so a diabolo is solved as a diabolo, not approximated with a rifle curve.
Is PelletArc a subscription?
No. PelletArc is a one-time purchase with no account and no ads, and it works fully offline. The free tier solves at full accuracy out to 35 metres.
Get PelletArc
The airgun-first calculator, in your pocket.
iOS & Android · one-time purchase · works fully offline.
Launching on iOS & Android. Pay once — no subscription.