Calibers that don’t belong anywhere near big game

Hunting big game demands cartridges capable of delivering reliable energy and penetration. Using a caliber that underperforms is more than a nuisance—it’s a risk to the animal and your ethical responsibility as a hunter. Over the years, certain cartridges have gained notoriety among experienced hunters for their lack of stopping power, poor penetration, or excessive recoil that compromises accuracy.

Even if a round looks good on paper, real-world hunting is unforgiving. Shot placement, energy transfer, and consistency all matter. Here are twelve calibers that consistently prove they don’t belong in a big-game hunting scenario.

.22 Long Rifle

The .22 Long Rifle is excellent for small game, but it doesn’t belong on deer, elk, or larger animals. Its low energy and poor penetration mean shots that strike vital organs often fail to produce a quick, humane kill.

While inexpensive and accessible, the round’s limitations are obvious in the field. Even precise shots rarely result in clean game recovery. Hunters relying on this cartridge for anything bigger than rabbits quickly learn that it’s ineffective for ethical hunting, and tracking wounded animals becomes an unnecessary ordeal.

.25 ACP

The .25 ACP is a tiny cartridge designed for pocket pistols, not hunting rifles. Its limited velocity and light bullet weight make it completely inadequate for big game, delivering insufficient energy and penetration.

While it may fire reliably, its impact is minimal. Attempting to hunt deer or similar animals with a .25 ACP would likely result in poor shot placement and unnecessary suffering. Experienced hunters leave this one on the bench, recognizing that a properly chosen caliber ensures both ethical kills and confidence in the field.

.32 ACP

The .32 ACP has a slight step up from the .25 ACP, but it still fails when it comes to big-game hunting. Low mass and energy make penetration shallow, and shot placement must be perfect to have any effect.

Even with premium loads, its capacity to stop a deer or larger animal is nearly nonexistent. Hunters quickly realize that tracking wounded game becomes more likely than a clean harvest. This caliber is best reserved for plinking or small pest control rather than the serious business of hunting.

.380 ACP

The .380 ACP is a popular self-defense round but lacks the necessary power for big-game applications. Despite moderate velocity, its light bullets don’t deliver sufficient penetration or terminal energy.

Ethical hunting requires more than point-and-pray shots. Using a .380 ACP on deer, elk, or moose would likely cause prolonged suffering and missed opportunities. Responsible hunters understand that bigger animals demand calibers that provide meaningful energy transfer and predictable terminal performance.

.32-20 Winchester

The .32-20 Winchester is an older cartridge often found in vintage rifles and revolvers. While serviceable on small game, it’s far below the threshold for deer or larger animals.

Its light bullet weight and limited velocity prevent reliable penetration to vital organs. Even handloaded rounds struggle to achieve consistent results. Hunters using a .32-20 on big game quickly learn that ethical kills are improbable, making it a cartridge better left to collectors or casual small-game shooting.

.218 Bee

The .218 Bee is a fast, light-caliber varmint round that performs well on prairie dogs and coyotes. However, it’s not meant for deer or larger game due to low bullet mass and limited energy.

Even with accurate shot placement, penetration is insufficient to reliably reach vital organs on larger animals. Hunters attempting big-game hunts with a .218 Bee will likely face extended tracking and ethical concerns. It’s a precision varmint cartridge, not a serious choice for any animal above 20 pounds.

.22-250 Remington

The .22-250 Remington shines for varmints, delivering flat trajectories and high velocity. But for deer and other big game, it’s underpowered. Bullet weights are light, penetration is shallow, and expansion can be unpredictable at larger sizes.

Hunters using this cartridge on deer often find themselves relying on improbable perfect shot placement. Ethical kills are inconsistent, and follow-up shots are often necessary. It’s excellent on prairie dogs and coyotes, but big-game hunters avoid it knowing better cartridges exist.

.17 HMR

The .17 Hornady Magnum Rimfire is incredible for small predators and pests, but it has no place near deer-sized animals. Light bullets and low mass mean minimal energy transfer and poor penetration.

Even point-blank shots are unlikely to achieve a clean harvest. Hunters risk wounding game and extending the track unnecessarily. Its appeal is in precision small-game work, not in tackling animals with thick hides or heavy muscle mass. Ethical hunters choose calibers that guarantee humane outcomes.

.204 Ruger

The .204 Ruger is a high-velocity, low-mass varmint cartridge. While it produces impressive flat trajectories, its terminal performance on deer is inadequate due to minimal penetration and energy.

Even experienced shooters find that shots that look clean on paper often fail in practice. Hunting with a .204 Ruger on medium to large game introduces ethical risks and inconsistent results. It remains an excellent varmint round, but responsible hunters recognize its limitations for any serious big-game scenario.

.22-250 Ackley Improved

The Ackley Improved version of the .22-250 is faster and slightly more efficient, but still underpowered for deer. Lightweight bullets at high velocities can fragment too early, reducing effective penetration.

Despite its reputation as a high-speed varmint round, it fails to deliver consistent results on heavier animals. Ethical hunting demands more reliable terminal performance, and this cartridge’s limitations make it unsuitable for serious deer hunting or anything larger. It remains best for prairie dogs, coyotes, and similar small prey.

.25-35 Winchester

The .25-35 Winchester is a historic deer round, but its modest bullet weight and energy fall short for today’s expectations. Large deer, elk, or moose demand more penetration than this cartridge consistently provides.

While some hunters have taken deer with it, success often comes down to ideal range and shot placement. The cartridge doesn’t provide a reliable margin for error, making follow-up shots more likely. Responsible hunters typically upgrade to more modern cartridges that ensure humane, effective kills.

.32 Remington

The .32 Remington, designed for older rifles, is an underpowered round by today’s standards. Light bullets and moderate velocity make it unreliable for anything above small deer.

Even carefully placed shots may not penetrate enough to reach vital organs. Extended tracking becomes a real risk. While collectors may value its history, ethical hunting requires cartridges capable of consistent, effective performance—something the .32 Remington cannot reliably provide on big game.