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Geoff Wilson's • Airgun reference library

Pellet & slug BC finder

Find ballistic coefficient figures for common airgun ammunition, or open a matching independent test at Hard Air Magazine without leaving the research to guesswork.

↗ Hard Air Magazine's original testsPellets · Slugs · Lead-free · BBs
—Catalogue entries
—Local BC values
—Checked HAM references
—Manufacturers & brands

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How to read the results: Local values are from the named source, not Hard Air Magazine. Historical values are unverified. HAM buttons lead to its own website; no HAM coefficients are republished here. BCs can vary by velocity and rifle, and different drag models are not interchangeable.
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Pellet / slugWeightLocal BCEvidenceSources & actions

Understanding BC figures

A BC describes aerodynamic drag relative to a reference model; it is not an accuracy score. G1 and GA measurements cannot safely be compared as if they were the same thing.

Manufacturer figures may not state a drag model. For trajectory work, confirm the model required by your ballistic software.

About external references

Hard Air Magazine publishes GA BCs for diabolo pellets and G1 BCs for slugs. Its independent test data remains on its own website, where you can see the original methodology and results.

Some direct links highlight text only in compatible browsers. When a pellet name occurs more than once, confirm the calibre and weight on the original table. Visit HAM's full database ↗