Ammunition

Shop our selection of ammunition from leading manufacturers like Atomic, Barnes, CCI Ammunition, Aguila Ammunition, and Berger Bullets. Iron Horse Armory carries a dependable lineup of ammunition built for accuracy, consistency, and reliable performance whether you’re hunting, training, or competing. Our inventory includes handgun ammunition in a wide range of calibers for self-defense and range use, rifle ammunition for hunting and long-range shooting, and shotgun shells in a variety of gauges and loads. We also stock handguns, rifles, and shotguns from a variety of manufacturers to keep you ready at the range or in the field.

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Ammunition Buying Guide

Shop ammunition online by comparing calibers, checking current availability, and reviewing specifications such as bullet weight, projectile type, muzzle velocity, and intended application. Ammunition covers the loads needed for every firearm in your collection, with options that span practice rounds, defensive loads, hunting bullets, and match-grade cartridges built for precision work.

Here’s what to consider before stocking up:

  • Match the caliber and bullet type to your platform when picking handgun ammunition for carry, range, or competition use.
  • Stock the right loads for your long guns by comparing rifle ammunition in calibers suited for hunting, sport, or tactical applications.
  • Pick the proper gauge and shot size when browsing shotgun shells for upland hunting, waterfowl, clays, or home defense use.
  • Stock affordable practice rounds with rimfire ammunition in calibers like .22 LR for plinking, training, and small game hunting.
  • Coordinate ammunition with the firearms in your collection across handguns, rifles, and shotguns, since each platform has specific caliber and gauge requirements.
  • Confirm caliber markings on the barrel of your firearm before buying ammunition, since the wrong cartridge can damage the firearm or cause serious injury.

Local And Compliance Notes

Buy ammunition online or visit our gun shop in Parker, Colorado to pick up loads in person. Iron Horse Armory also serves customers from nearby cities including Castle Rock, Franktown, Centennial, and Lone Tree.

Ammunition sales follow federal guidelines and applicable Colorado requirements, which can involve age verification and identification at the point of sale. Shipping timelines and carrier restrictions vary by product, so review checkout information carefully before placing your order.

Storage practices, transportation rules, and range protocols may differ based on circumstances. Contact the shop directly for clarification on purchase requirements, accepted identification, and current store policies.

Frequently Asked Questions About Ammunition

1. Can I use any ammunition in my firearm?

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No, ammunition must match the exact caliber and chambering stamped on your firearm’s barrel. Using the wrong cartridge can damage the firearm or cause serious injury.

2. What's the difference between full metal jacket and hollow point ammunition?

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Full metal jacket bullets are designed for target shooting and tend to penetrate without expanding. Hollow point bullets expand on impact, making them better suited for defensive use.

3. How should I store ammunition?

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Keep ammunition in a cool, dry place away from temperature extremes and direct sunlight. Sealed containers help protect rounds from humidity and corrosion over time.

4. What does grain mean on ammunition boxes?

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Grain refers to the weight of the bullet, with one grain equal to roughly 1/7000th of a pound. Heavier bullets typically retain energy better at range while lighter bullets often offer flatter trajectories.

5. Is it safe to shoot old ammunition?

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Properly stored ammunition can remain reliable for decades, though signs of corrosion, dented cases, or damaged primers indicate rounds should not be fired. When in doubt, dispose of questionable ammo safely.

6. Can I buy ammunition online and have it shipped?

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Yes, ammunition can be shipped directly to most addresses, though some states and localities have additional requirements. Review checkout information for shipping rules in your area.

7. What's the difference between centerfire and rimfire ammunition?

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Centerfire ammunition has a primer in the center of the case base and is used in most modern firearms. Rimfire ammunition has the primer in the rim and is common in .22 LR and similar small calibers.

8. How much ammunition should I keep on hand?

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Keep enough for regular practice, hunting season, and a reserve for availability gaps. Many shooters maintain a few hundred rounds per active caliber as a baseline.