The Barnes Harvest Collection Sierra Pro-Hunter 450 Bushmaster 260-grain Flat Nose (Barnes part no. 32480) pairs Barnes’ Harvest Collection with a classic cup-and-core Sierra Pro-Hunter bullet built for AR-platform big-bore hunting. 450 Bushmaster was developed to deliver big-bore knockdown power from a standard AR-15 magazine and bolt carrier, and its straight-wall case makes it legal for deer hunting in states that restrict rifles to straight-walled cartridges. At 2,165 fps, the 260-grain Pro-Hunter offers solid expansion and stopping power at the moderate ranges this cartridge is built for.

Key Specifications

• Chambered in 450 Bushmaster, a straight-wall cartridge built to deliver big-bore power from a standard AR-15 platform.
• The 260-grain bullet weight balances manageable recoil with real knockdown power for deer-sized and larger game.
• Muzzle velocity is rated at approximately 2,165 fps, solid performance for this straight-wall cartridge’s typical hunting ranges.
• The Sierra Pro-Hunter bullet uses traditional cup-and-core construction, built to expand reliably on impact.
• Its flat-nose profile is shaped for reliable feeding through AR-platform magazines.
• This is Barnes’ Harvest Collection, pairing Barnes ammunition engineering with a proven Sierra hunting bullet.
• Cases are brass, standard for reloading and reliable ignition.
• It ships 20 rounds to a box, the standard count for this Harvest loading.
• Cost works out to about $2.38 per round, reasonable for a premium straight-wall AR hunting load.

Frequently Asked Questions

Is this cartridge legal where rifles are restricted to straight-wall cases? 450 Bushmaster is a straight-wall cartridge, which is exactly why it’s popular in states that restrict deer rifles that way — check your local regulations to confirm.

Will this bullet expand? Yes — the Sierra Pro-Hunter uses traditional cup-and-core construction built to expand reliably.

How many rounds come in a box? Each box holds 20 rounds.

Buy the Barnes Harvest Collection Sierra Pro-Hunter 450 Bushmaster 260gr FN

For AR hunters in straight-wall-only territory, this load delivers real big-bore knockdown power out of a familiar platform. Order it from our Barnes lineup at our Lubbock, Texas gun shop and it ships fast to your door, or browse the full rifle ammunition selection for more straight-wall AR hunting loads.