Choosing Ammunition That Matches Your Firearm and Purpose

The cartridge you put into your gun isn’t just about it fitting into the magazine or chamber. It can affect how reliable your gun is, how it recoils, how accurate it is, how much it needs to be cleaned, and what your shooting experience will be like at the range, or whether you are training for lawful self-defense or hunting in the field. There are so many kinds of ammo to choose from, all with different bullet designs, manufacturers, etc., but comparing them is best done by first looking at what cartridge is required by the firearm.

Every round should work well, but which one is best is determined by its intended purpose. Range ammo, field ammo, and defensive ammo may require very different bullet styles and have different performance needs.

Verify Cartridge Compatibility Before Loading

First, always start with the exact cartridge the firearm is designed to shoot. It will be stamped on the firearm and listed in the manual. Do not assume that a cartridge is interchangeable with another just because they look similar. Using the wrong cartridge in your firearm could be very dangerous.

Be sure to check the following:

• Caliber / gauge of the cartridge
• Length of case and pressure of the cartridge
• Bullet weight (if applicable)
• Any warnings from the manufacturer for certain cartridges
• Whether the firearm is intended to shoot standard or high-pressure ammunition

Do not rely on a verbal description at the counter, or the fact that it looks right. Always read the label on the box of ammo before loading and compare it with the markings on the firearm.

Match the Load to Its Intended Use

Most range ammo is chosen based on how manageable the recoil is, that it will feed reliably, and that it doesn’t cost too much per round. Often, the bullet type used for range ammo will be a full metal jacket) or other similar bullet that allows for repeat drills without having to spend money on specialty bullets.

For hunting, the bullet type is just as important as the cartridge caliber. The type of expansion, the bullet weight, and the ability to penetrate the target can mean the difference between a successful, ethical hunt and a failed shot. Choose a cartridge based on the game you’re pursuing, the distance the shot is likely to be taken at, and applicable laws in your area.

Test Performance and Preserve Proven Results

Look for Consistent, Undamaged Cartridges

Good ammo tends to be more consistent from round to round. This is most noticeable when shooting for precision or using a semi-automatic firearm that relies on cycling the action after each shot.

Assorted ammunition cartridges

Look for clean, unaltered cartridges with the bullet properly seated and the primer undamaged. The packaging should tell you the caliber, bullet type, and intended use of the cartridge, and Britannica is the least fluffy write-up I’ve seen at britannica.com/technology. Discard any loose ammunition that has an unknown source, badly corroded casings, or that was left out in the elements or exposed to oil, moisture, or excessive heat.

Just because a cartridge costs more doesn’t mean it is the right choice for your firearm or your needs. You can check with AmmoMan Top Ammo Brands or similar companies, if you want that route, but skip this if your current load is already proven. The real question to ask is whether it will work safely and as expected in your firearm and your situation.

Practice With Field or Defensive Loads

It’s very common to practice primarily with cheaper range ammo and only reserve expensive specialty rounds for field or defensive use. That may be acceptable, but the firearm should still be tested with the load that will be used when the time comes.

The way the firearm recoils, the way it rises in the muzzle, and where the shots land will all change depending on the weight and style of the bullet. A firearm that worked well with a previous load might not work well with a new load. If the ammo fails to feed, eject, or fire repeatedly, do not continue to use it. Instead, check the ammo and the firearm for issues.

If you are just buying a cartridge that has already been proven to work in your firearm and you have practiced with it successfully at the range before, then it is unnecessary to re-test it. For any new type of cartridge, it is a good idea to do a simple function check to ensure it is safe and works correctly.

Store Loads Separately and Record What Works

The choices you make when buying ammo don’t stop once you purchase it. Ammo should be stored in a cool, dry place away from unauthorized persons, flames, and cleaners. Keep it in the original packaging so you can easily identify the cartridge later on.

Different cartridges should be kept separated, rather than tossed in a pile of loose cartridges together. This prevents you from mixing up different chamberings and also makes it easier to inspect what you have before heading to the range.

If you find that some loads work better in your firearm for your intended use, take note of the cartridge type, bullet type, and how it performed in your firearm. Then, you can bring that list with you when you need to replace your next box of ammo.