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As one of the most popular new ammo types, .338 ARC Ammo has been making a name for itself in everything from hunting to competition shooting and standard target practice. With both subsonic and standard options available, 338 ARC works especially well from a suppressed rifle, providing excellent stopping power while minimizing the muzzle flash and report when you fire a round. This means 338 ARC ammo is an excellent choice for hunting predators, as it packs a serious punch with the larger bullet size, allowing you to take down coyotes, bears, and more. Or, if you're not as concerned about keeping a low profile, we have standard pressure 338 ARC ammo that works exceptionally well while sighting in your scope and practicing at the range. Choose from plenty of Hornady .338 ARC Ammo, HSM Ammunition .338 ARC Ammo, Ultramax .338 ARC Ammo, and more to get the best ammo for your needs.image

What Is the Difference Between 338 ARC and 300 Blackout?

When it comes to popular new rifle cartridges, both 338 ARC ammo and 300 Blackout ammo are some of the frontrunners. Specifically, 338 ARC is slightly newer than 300 Blackout, as it's an improved version of the cartridge that uses a larger caliber. These changes were to make 338 ARC perform better at longer ranges than 300 Blackout, which is typically used in short-barreled rifles and AR pistols. This means 338 ARC ammo is an excellent choice for hunting, long-range shooting, and tactical operations, as it has an effective range of about 800 yards.

What Is the Difference Between 338 ARC Ammo and 8.6 Blackout Ammo?

Despite the obvious naming differences, these two calibers share a lot of similarities in how they were designed to be used. They both excel at delivering considerable stopping power at long range, so you can use either one for hunting and tactical operations. However, they differ in the weapon platform they are designed for. Specifically, 338 ARC ammo was designed to be used by the AR15 platform, while 8.6 Blackout ammo is meant to be used on an AR10 platform.

Shop .338 ARC Ammo Today!

When you need high-quality ammo that you can count on for your firearms, choose OpticsPlanet! We have hundreds of calibers produced by all the best brands in the business, so you can find everything from common 9mm ammo to niche calibers for old rifles. You can browse our selection online or on our top-rated mobile app to shop on the go.

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    Last updated 2026-07-22 UTC.