Understand the flight
Explain zero, gravity, drag, G1/G7, wind and angular measurement in your own words, with diagrams beside the explanation.
October illustrated edition · Digital guide + record pack
Ballistics 101
Understand your rifle’s numbers. Know what you’ve actually proven.
The plain-English guide to what happens after you pull the trigger.
Follow the physics, audit your inputs and make your practice records useful.
69 guide pages · 27 vector figures · 4 fillable worksheet pages
NZ$12.99incl. GST · One-off purchase
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Secure checkout via Stripe. Card details are entered on Stripe, not on Within Range.
Two PDFs to download after checkout: the illustrated guide and the fillable record pack. Save locally for reading or printing. No physical item, shipping fee or automatic delivery email. Keep your personal download link; support can help recover a purchase with your receipt.
Make the numbers mean something
Know the source
Distinguish measured, published, inferred and assumed inputs. Keep the units, source and uncertainty attached to each value.
Keep better evidence
Follow a complete fictional notebook case from recorded groups to a traceable input error and a specific, bounded conclusion.
See the actual pages
These are pages from the edition you receive. The free sample includes readable explanations and the complete fictional case.
What comes with the purchase
- 69-page illustrated guide: 21 core lessons, worked examples, 27 vector figures, annotated app screens, a quick reference, glossary and sources.
- Four-page fillable record pack: 30 fields across input provenance, session records, prediction/observation comparisons and group-unit reviews. Type into a PDF reader that supports forms, or print and write.
- A practical way through: reader routes for learning the terminology, checking app inputs and understanding your own practice history.
Both PDFs are included in the same purchase. The guide has selectable text and PDF bookmarks. Save completed worksheets as a separate copy.
Who it is for
You know basic rifle operation and want BC, G1/G7, MOA, MRAD and the numbers in an app to make more sense. Start with the explanation, then use the examples and records to ask better questions about your setup.
This is an introductory learning resource. It does not provide load recipes, rifle recommendations or a universal hunting distance.
Useful learning, with the tools still free
The core tools are intended to remain freely available. Buying the guide gives you a structured illustrated resource and reusable records, and helps support Within Range’s research, development and running costs.
Before you buy
How do I receive it?
Return from Stripe checkout to your personal download page. Download both PDFs there, save them locally and bookmark the private link. There is no automatic delivery email; a Stripe receipt is a payment record.
I bought the earlier edition. Do I need to buy again?
No. Revisit your original personal download link for the current guide and record pack. If you lost it, contact support@withinrange.nz with your receipt reference.
Can I read it offline or print it?
Yes, after saving the PDFs. The guide is single-column, 7 × 10 inches; use Fit to page on A4. The companion records have more writing space. PDF form support varies by reader.
Understand what the evidence can support
Numerical charts identify their evidence role. Fictional notebook entries are labelled. Predictions, observations, terminal performance and shot selection stay distinct.
Ballistics 101 is educational material. It is not a loading manual, legal advice, firearms-safety training or a statement that any particular range is an ethical hunting distance. It has not had independent specialist peer review.