Varmint Hunting Calibers: The Best Proven Guide for 2026

Choosing among varmint hunting calibers is really about answering three questions: How far are you shooting? What are you shooting at? And do you care about saving the pelt? Get those answers straight and the right caliber almost picks itself.

Varmints — coyotes, foxes, bobcats, groundhogs, prairie dogs, ground squirrels — are small, fast, and shifty. They demand accuracy and speed above all. This guide ranks the best varmint hunting calibers from affordable rimfires to hard-hitting centerfires, and tells you exactly which one belongs in your chamber for your quarry and your terrain.

What Makes Great Varmint Hunting Calibers

Before the rankings, understand what you’re optimising for. The best varmint hunting calibers share three traits:

Accuracy. Varmints are small targets — a prairie dog’s vitals are the size of a golf ball. Your cartridge has to be inherently precise.

Speed (flat trajectory). Fast bullets shoot flatter, which means less holdover guesswork on targets that appear and vanish in seconds. High velocity also cuts flight time, giving a shifty animal less chance to move.

Appropriate terminal effect. Enough to kill cleanly and ethically — but if you’re saving fur, not so much that you blow a fist-sized exit hole in a coyote hide. Bullet choice matters as much as caliber here.

With that framework, let’s rank the varmint hunting calibers from smallest to largest.

Rimfire Varmint Hunting Calibers (Close Range)

.22 LR — The Budget Starting Point

For close-range pests inside ~75 yards — ground squirrels, rats, close rabbits — the humble .22 LR is cheap, quiet, and entirely adequate. It won’t reach out, but for backyard-scale pest control and new hunters, it’s the most affordable entry into varmint hunting calibers there is.

.17 HMR — The Rimfire Varmint King

When Hornady necked down a .22 Magnum to .17 caliber in 2002, it created the bane of prairie dogs everywhere. The .17 HMR sends a 17-grain bullet at ~2,550 fps with a super-flat trajectory that lets you hold nearly dead-on to 150 yards. It’s devastatingly accurate on small varmints and one of the best mid-range varmint hunting calibers you can buy — a genuine “poor man’s varmint rifle.” Just remember its fragile bullet fragments fast; it’s ideal for small pests, less so for tough coyotes past 100 yards.

.22 WMR — The Fur-Friendly Rimfire

The .22 Magnum trades some of the .17’s flat trajectory for a heavier bullet that penetrates deeper and is famously fur-friendly on foxes and close coyotes inside ~100 yards. Where you want a rimfire with a bit more authority and less pelt destruction, it’s the pick.

Centerfire Varmint Hunting Calibers (Real Reach)

Here’s where varmint hunting calibers get serious. When shots stretch past 150 yards, or coyotes are the target, centerfire is the answer.

.17 Hornet — The Rimfire-Feel Centerfire

The .17 Hornet feels like a rimfire with teeth: low recoil, softer report than a .223, and accurate enough to make 200-yard pests routine. Because it’s centerfire, it’s reloadable, and it’s a superb “nuisance specialist” for foxes and lighter-bodied varmints where pelt damage matters. Not a shoulder-buster, not a barrel-burner.

.223 Remington — The Workhorse Standard

If you buy one centerfire varmint rifle, make it a .223 Remington. It’s the practical standard among varmint hunting calibers — the widest factory ammo selection, the most rifles, the cheapest feeding, and a flexible bullet range (40–77 grains). A 55-grain V-MAX at ~3,240 fps shoots flat and frags explosively, handling coyotes cleanly out to 300+ yards. Affordable, accurate, and available everywhere — it’s the workhorse for good reason. For fur, choose a controlled load like a 53-grain V-Max to limit exit damage.

(Note: the .223 Remington and 5.56 NATO are nearly identical, and the AR-15 platform makes fast follow-up shots easy — a real advantage on a prairie-dog town.)

.204 Ruger — The Speed Demon

Introduced in 2004, the .204 Ruger is the fastest mainstream varmint cartridge, driving a 32-grain bullet at 4,000+ fps. The result is a laser-flat trajectory with minimal recoil, so you can spot your own hits and make quick follow-ups. It’s beloved by fur-takers for small entrance and exit holes — less sewing later. It’s a hammer on prairie dogs, groundhogs, and foxes. The one caveat: its light bullet gets pushed by wind past 300 yards, and it can occasionally let a coyote run.

.22-250 Remington — The King of Varmint Rifles

For 50 years, the .22-250 Remington has been the gold standard of long-range varmint hunting calibers, and it remains a top performer in 2026. It launches a .224 bullet at a blistering 3,800+ fps — roughly 700 fps faster than a .223 — for a flat trajectory and hard hits that anchor coyotes in their tracks out to 350–400 yards. It’s the classic “coyote medicine.” The trade-offs: more muzzle blast, and it burns barrels faster (expect 1,500–2,500 accurate rounds), so pace your strings.

.243 Winchester — The Do-It-All Big Varmint Round

The .243 Winchester sits at the top of the varmint ladder and crosses into deer country. It sends a 58-grain varmint bullet over 3,400 fps, bucks wind beautifully, and anchors big northern coyotes past 400 yards — some hunters take them past 600. It’s more than you need for prairie dogs, but if your list runs to coyotes first, with the option to hunt deer, the .243 is the versatile choice. Many fur-takers find it does less pelt damage on coyotes with an 87-grain open-tip than a .22-250 does with a light 52-grain bullet — proof again that bullet choice rules.

Best Varmint Hunting Calibers by Job

Varmint Hunting Calibers: The Two Rules That Matter Most

1. Bullet choice can matter more than caliber. A fur hunter and a pest exterminator might shoot the same .223 but load completely different bullets — a controlled-expansion bullet to save hides, or an explosive varmint bullet for maximum effect on pests. Match the bullet to the goal, not just the caliber to the animal.

2. Match the caliber to your realistic maximum range. Don’t buy a barrel-burning .22-250 for 100-yard timber foxes, and don’t take a .17 HMR to a 400-yard prairie-dog town. Be honest about the distances you actually shoot, and buy accordingly. The best of the varmint hunting calibers is the one that fits your terrain.

Varmint Hunting Calibers: The Honest Recommendation

If you want one rifle to do almost everything, buy a .223 Remington. It’s accurate, affordable, available everywhere, handles everything from prairie dogs to coyotes, and the cheap ammo means you’ll actually practice — which is what fills the game bag.

If you want a dedicated rimfire for smaller pests and quiet work, the .17 HMR is the standout.

And if your passion is reaching way out across open country for coyotes, the .22-250 has earned its crown over half a century.

There’s no single best answer among varmint hunting calibers — only the right tool for your quarry, your range, and whether you’re saving the fur. Most serious varmint hunters end up with a rimfire and a centerfire, because together they cover everything.

Shop Varmint Ammo at Trigger Ammo Store

Gear up for the field with the right rounds. For centerfire varmint work, browse our .223 ammo and 5.56 NATO ammo — including flat-shooting V-Max varmint loads — plus our wider rifle ammo selection for larger predator calibers.

For rimfire varmints and pest control, stock up on .22 LR ammo and our full rimfire ammo range, including .17 HMR and .22 WMR. Buy in bulk before the season, store it cool and dry, and you’ll be ready when the calling starts.

👉 Get field-ready — shop varmint ammo now →

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💬 Before You Go — Tell Us Your Go-To!

What’s your favourite varmint hunting caliber? Drop a comment with your coyote or prairie-dog setup and the ranges you shoot — real-world experience helps fellow hunters choose smarter. And if you’re heading off without finding the load or caliber info you needed, tell us what you were after — it genuinely helps us stock and write better. Good hunting! 🎯🐺

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Please buy and use ammunition responsibly and in accordance with all federal, state and local laws. Always confirm your state’s regulations on legal calibers for predator, night, and varmint hunting — rules vary widely, and some areas require lead-free bullets. Only take shots within your rifle’s and your own effective range for clean, ethical kills. You must meet all legal requirements to purchase, and ammunition cannot be shipped to every jurisdiction.

Frequently Asked Questions

What are the best all-around varmint hunting calibers? The .223 Remington leads them. It’s accurate, affordable, available everywhere, handles everything from prairie dogs to coyotes out to 300+ yards, and the cheap ammo encourages the practice that makes you effective.

What’s the best caliber for coyotes? For long-range open-country coyotes, the .22-250 Remington — fast, flat, and hard-hitting to 400 yards. For closer shots and best value, the .223 Remington. The .243 Winchester is excellent for big coyotes and doubles as a deer rifle.

What’s the best caliber for prairie dogs? The .17 HMR for rimfire work to 150 yards, or the .204 Ruger and .223 Remington for centerfire reach. The .22-250 excels at the longest ranges.

What’s the most fur-friendly varmint caliber? For rimfire, the .22 WMR. For centerfire, the .204 Ruger (small entrance/exit holes) or a .223/.243 loaded with a controlled-expansion bullet. Bullet choice matters as much as caliber for preserving pelts.

Is a .22 LR enough for varmints? For close-range small pests inside about 75 yards — ground squirrels, rats, close rabbits — yes. For coyotes or anything past 100 yards, step up to .17 HMR or a centerfire.

Which varmint caliber has the least recoil? Among centerfires, the .17 Hornet and .204 Ruger are very light-recoiling. Rimfires like .17 HMR and .22 WMR have almost none.

Does the .22-250 really burn out barrels? Its high velocity does erode barrels faster than a .223 — expect roughly 1,500–2,500 accuracy-critical rounds. Pace your shot strings to manage heat, and it’ll serve you well for years.