Comparing centrefire vs rimfire cartridges for hunting small game
From the mallee scrub of South Australia to the rabbit-plagued pastures of rural New South Wales, Australian shooters face a real choice when pests like European rabbits, foxes, and feral cats need controlling. The decision between rimfire and centrefire shapes everything from the licence category to ongoing running costs. Hunters across Melbourne, Brisbane, and Perth weigh these two options carefully before heading out for a weekend of spotlight work or a long-range rifle session.
Both cartridge families enjoy decades of proven use across the country, yet they deliver very different experiences at the bench and in the bush. Rimfires remain the classic starting point thanks to their mild report and modest price, while centrefire rounds offer reach and authority on tougher targets. Understanding how each system works and how Australian regulators treat them makes the rest of the decision much simpler.
Understanding the core differences
Rimfire cartridges rely on a priming compound spun into the rim of the case, with the firing pin crushing that rim to ignite the powder. This construction keeps manufacturing costs low and rifle actions simple, which is why many Sydney and Adelaide clubs recommend a .22 LR for new shooters. Centrefire rounds use a separate, centrally located primer that delivers a more reliable spark in cold weather or after extended storage.
The reliability gap matters more than many realise. Damp mornings along the Murray River or dusty conditions in the Western Australian wheatbelt can defeat marginal ammunition. Centrefire primers typically handle moisture better, reducing misfires during a dawn raid on a warren. Rimfires remain serviceable for most outings but can occasionally fail to fire in adverse weather.
Cost is decisive for landholders running Fox Shooters groups across regional Victoria. Bulk rimfire ammunition costs roughly one-third the price of centrefire loads, freeing budget for more trigger time. Centrefire shooters pay more per round but gain a wider choice of bullet weights suited to specific quarry.
Legal framework across Australian states
Australian firearm law treats rimfire rifles differently from centrefire models. In NSW and the ACT, Category A licences typically cover rimfire rifles, while centrefire rifles sit under Category B. Victoria, Queensland, and Tasmania follow similar classifications, although paperwork, cooling-off periods, and waiting times differ between jurisdictions.
Hunters pursuing rabbits on public land usually require a separate game hunting permit. Councils in New South Wales, Victoria, and Western Australia issue licences that authorise specific activities and define open seasons. Property owners controlling pests on their own land work under different rules, yet still need the correct firearm category approved for their licence class.
Centrefire rifles like the .223 Remington remain restricted in some jurisdictions because of their shared lineage with military-style firearms. Cat A licensing covers many .22 LR, .22 WMR, and .17 HMR rimfires, giving new shooters a smoother path to approval. Anyone uncertain about their state's stance should verify the latest regulations with the local police firearms registry before purchasing a rifle or ammunition.
Ballistic performance in the field
Performance differences become obvious beyond 50 metres. A standard .22 LR drops noticeably by 100 metres and struggles to punch through light cover. A .17 HMR maintains a flatter trajectory and delivers meaningfully more energy, while centrefire rounds like the .223 Remington retain usable velocity well past 200 metres.
Wind drift challenges shooters in open country. Anyone who has stalked rabbits near Broken Hill knows a light crosswind can push a .22 LR several centimetres off course at 100 metres. Heavier centrefire projectiles resist wind better, improving first-shot hits when the moment of presentation arrives.
Terminal performance also varies. A .17 HMR creates a dramatic wound channel on foxes within its effective range but lacks authority beyond 150 metres. Centrefire rounds anchor themselves with more retained energy, providing the margin hunters appreciate when targeting thick-furred animals or pushing a bullet through cover at dusk.
| Feature | Rimfire (.22 LR, .17 HMR) | Centrefire (.223 Rem) |
|---|---|---|
| Cost per round | $0.30 – $0.90 AUD | $1.50 – $3.50 AUD |
| Effective range | 100 – 150 m | 150 – 300 m |
| Licence category | Category A | Category B |
| Recoil and noise | Very mild | Moderate |
| Reliability in damp or dust | Good, some risk | Excellent |
| Best suited quarry | Rabbits, small possums | Foxes, feral cats |
Ammunition selection and loading practices
Ammunition availability across Australia has expanded significantly in recent years, with major retailers stocking loads from Winchester, Federal, CCI, and Norma. Rimfire shooters enjoy a deep catalogue with subsonic, hyper-velocity, and match-grade options on shelves from Perth to Hobart. Centrefire hunters also find premium soft-point and ballistic-tip projectiles designed specifically for varmint control.
Reloading appeals to professional pest controllers stretching tight budgets. Centrefire brass can be reused dozens of times, and regional clubs in Wagga Wagga and Mildura run regular workshops covering case preparation and load development. Rimfire cases cannot be reloaded, removing that avenue of savings but keeping the supply chain simple.
Specialty ammunition gives centrefire shooters a tactical edge. Varmint-specific projectiles provide tailored terminal performance for foxes at varying distances and light conditions. While sourcing the right cartridge matters, many hunters also secure access to personal prescriptions before heading into remote parts of the Northern Territory to ensure nothing cuts a multi-day trip short.
Matching cartridge to common small game
Rabbits remain Australia's most abundant small-game quarry, and rimfire rifles keep numbers in check across cropping districts like Bordertown and the Riverina. A .22 LR paired with subsonic hollow-point ammunition dispatches rabbits cleanly out to roughly 50 metres. Property owners needing longer reach often step up to a .17 HMR for shots across open ground or after dark with a spotlight.
Foxes demand more authority than rabbits, especially at twilight when many pest controllers work. A .223 Remington loaded with a 40-grain ballistic-tip bullet has become the favoured tool for professional controllers in western Victoria and the Western Australian wheatbelt. The flatter trajectory reliably anchors foxes at ranges where rimfires begin to drift noticeably.
Possums present a more specialised challenge because they are typically shot from elevated positions under tree canopy. Many Queensland canefield shooters continue to favour accurate rimfire rigs because engagement ranges rarely exceed 30 metres. For feral cats prowling grain silos and machinery sheds in the Mallee, centrefire rounds ensure clean results when a cat presents itself at unpredictable distances. Shooters carrying a secondary sidearm during organised drives often rely on resources such as how to select the best holster for appendix carry for a comfortable, accessible carry method.
Browse the full catalogue at Guns and Magz to compare current stock, wholesale pricing, and the latest hunting loads from leading manufacturers. With accurate information on licensing requirements in your state and a clear picture of the quarry you pursue, the rimfire-versus-centrefire decision becomes far more straightforward. Choose the ammunition that matches your primary goal, and the rest of the setup will follow naturally.