Underwood Ammo 823 Xtreme Penetrator 9mmLuger+P+ 115gr Solid Monolithic 20 Per Box/10 Case

Ammunition

Shop ammunition from trusted names like Federal Ammunition, Fierce Firearms, Fiocchi, Speer, and Sterling. ICB Firearms carries a broad selection of ammunition for range work, hunting trips, home defense, and routine training, with dependable options for handguns, rifles, and shotguns. Shooters can count on our inventory for clean function, consistent performance, and practical choices in popular calibers and loads. From stocking up on target rounds to choosing field-ready cartridges, this category makes it easy to find ammo that fits the way you shoot.

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Ammunition Buying Guide

Shop ammunition online by comparing load types, checking current availability, and reviewing specifications such as caliber, bullet weight, shell length, and intended use. A better match starts with the firearm you shoot most and the role you have in mind.

These are the details that make sorting this category easier:

Confirm the exact chambering before checkout. Buyers feeding handguns and rifles should match the caliber marked on the firearm to the box label.

Sort by use, not just price. Handgun ammunition and rifle ammunition can serve very different jobs at the range, in the field, or in a defensive setup.

Check gauge and shell length when you shop shotgun shells. Safe fit comes first, and the marked chamber tells you what belongs in the gun.

Keep practice and field loads in separate lanes. Rimfire ammunition often fits plinking, training, and small game with light recoil and easy follow-up shots.

Think about reload rhythm at the same time. Buyers who shoot often may want matching magazines ready for smoother range sessions.

Local And Compliance Notes

Browse ammunition online, or visit our gun store in St. Claire Shores, Michigan. ICB Firearms serves customers from nearby cities including Macomb, Clinton Township, Grosse Pointe, Warren, and Royal Oak.

Ammunition sales follow federal guidelines and any applicable Missouri rules. Shipping methods, age checks, and carrier limits can change by item and destination, so review checkout details before you place the order.

Storage and transport matter after the sale. Reach out to the shop for current store policies, accepted identification, and order questions tied to pickup or shipping.

Frequently Asked Questions About Ammunition

1. How do I know which ammunition fits my firearm?

Use the exact caliber or gauge marked on the firearm. A close match is not enough.

2. What is the difference between rimfire and centerfire ammunition?

Rimfire primers sit in the rim of the case. Centerfire primers sit in the case head and cover most handgun and rifle cartridges.

3. Does bullet weight matter?

Yes. Bullet weight can change recoil, velocity, and downrange performance.

4. Can I use the same ammo for training and defense?

Not always. Range loads and defensive loads often serve different jobs.

5. Do shotgun shell length and gauge both matter?

Yes. The marked chamber tells you what shell length and gauge belong in the shotgun.

6. Can I order ammunition online?

Yes, though shipping rules and age requirements can vary by item and destination. Review the order details before checkout.

7. How should ammunition be stored?

Keep it dry, labeled, and separated by caliber. A cool, stable space helps avoid mix-ups.

8. Should I buy extra magazines with ammunition?

Extra magazines can make range time smoother and keep your setup organized. Match the magazine to the firearm, not just the caliber.

Ammunition