Air Rifle Accuracy
How to Find the Best Pellet for Your Air Rifle
There is no single "best" air rifle pellet — only the best pellet for your barrel. Two identical rifles off the same production line can prefer different pellets. This is a simple, repeatable method to find yours, backed by measured data instead of guesswork.
Why barrels are fussy about pellets
An air rifle barrel imparts a specific spin and harmonic vibration to every pellet that leaves it. Tiny differences in pellet weight, head size, skirt shape and hardness change how well a given pellet "fits" that barrel's behaviour. A pellet that produces a ragged one-hole group in one rifle can scatter badly in another. That's why experienced shooters never just buy the most-recommended tin — they test.
The variables that matter most:
- Weight — heavier pellets (e.g. 18+ grain in .22) resist wind better but need enough power; lighter pellets suit lower-powered rifles.
- Head size — premium pellets are sold in head sizes (4.50, 4.51, 4.52 mm). A 0.01 mm difference can visibly tighten or open a group.
- Shape — domed pellets dominate for accuracy at range; wadcutters suit close target work; pointed and hollow-point are hunting compromises.
- Brand and batch — manufacturing consistency varies, and even the same product can shift between lots (more on that below).
The pellet test, step by step
The goal is a fair comparison: change only the pellet, and keep everything else as constant as you can. The most reliable way to do that is to put every candidate on one target sheet in a single session, shooting each pellet as a block with settling shots after every change.
- Pick 3–5 candidate pellets. Include at least one premium domed pellet in two head sizes if you can get them.
- Shoot off a rest. Use a bipod or bags to remove as much human wobble as possible — you're testing the pellet, not your hold.
- Fixed distance. 25 or 50 yards for hunting/field; whatever you actually shoot at. Keep it the same for every pellet.
- Same conditions. Test in one session, in similar wind. Wind is the biggest hidden variable — a gust can make a good pellet look bad.
- 5-shot groups, at least two per pellet. One group can lie; two or three reveal the real pattern.
- Settle the rifle. If it's a PCP, stay within the consistent part of the fill (not the first or last few shots).
- Measure and record every group. This is the step most shooters skip — and it's the one that turns a hunch into an answer.
Pellet App does this automatically. Photograph each target and Pellet App's AI measures the group in millimetres, then ranks every pellet you've tested by average group size — so the winner is obvious at a glance, with no tape measure and no spreadsheet.
How to measure a group (and what "good" looks like)
Group size is normally measured as the extreme spread: the distance between the centres of the two furthest-apart holes. A more stable measure over many shots is the mean radius — the average distance of all shots from the group's centre — which is less skewed by a single flier.
As a rough guide for a sub-12 ft·lb air rifle at 50 yards:
| Group at 50 yd | Standard |
|---|---|
| Under 15 mm | Excellent |
| 15–25 mm | Very good |
| 25–40 mm | Good |
| 40–50 mm | Competent |
| 60 mm and over | Room to improve |
Use these as relative benchmarks. What matters for a pellet test is the difference between pellets in the same session — the tightest average wins.
Don't forget the lot number
Once you've found a pellet your rifle loves, note its lot or batch number (usually stamped on the tin base). Pellet production varies slightly between batches, and shooters regularly find a new tin of the "same" pellet groups differently. If you've found a great lot, buy several tins of it. If your groups suddenly open up, a batch change is a prime suspect — and worth checking before you blame yourself or your rifle.
Common mistakes that ruin a pellet test
- Testing in gusty wind and blaming the pellet for the weather.
- Shooting one group per pellet — too little data to trust.
- Not measuring — eyeballing "that looks tighter" is how good pellets get rejected.
- Mixing distances or positions between pellets.
- Ignoring head size — re-testing the same pellet in a different head size is often the cheapest accuracy upgrade available.
Best pellets by rifle model
The method above works on any air rifle. But some platforms come up often enough that it's worth knowing where other owners tend to start — which pellets are commonly reported to shoot well, and what's specific about that rifle's barrel, power plant and calibre options. These pages give you a shortlist to test, not a verdict:
- Best pellets for the Air Arms S510 — regulated and unregulated PCP, .177 / .22 / .25, Lothar Walther barrel
- Best pellets for the Weihrauch HW100 — regulated as standard, .177 / .22, and a reputation for being unfussy
- Best pellets for the Daystate Red Wolf — electronic power control, three settings, and a very wide power range
More models in progress: BSA R-10, FX Maverick, Brocock Sniper. Each one is built the same way — community-reported starting points with sources, plus the test method to settle it on your own rifle.
Turn it into a habit
Finding your pellet isn't a one-off. Barrels wear, you change rifles, manufacturers tweak products, and new batches arrive. The shooters who stay accurate are the ones who keep records — what they shot, in what conditions, and how it grouped — so every session adds to the picture instead of starting from scratch.
Pellet App keeps the record for you. Every session logs the pellet, lot number, distance and conditions automatically, and the AI measures every group — so your pellet rankings stay up to date without any manual logging.
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