The Hornady American Whitetail .300 Winchester Magnum 180gr InterLock SP load (Hornady part no. 82044) is a 20-round box of .300 Winchester Magnum deer season ammunition from Hornady, built around a 180-grain InterLock SP bullet. In Hornady’s published data from a 24-inch test barrel, it leaves the muzzle at 2960 fps with 3502 ft-lb of energy. The InterLock SP bullet is Hornady’s exposed-lead-tip design with a secant ogive profile and an InterLock ring, a raised ring inside the jacket that locks the jacket to the core during expansion. It is a practical pick for confirming your zero ahead of the season and then hunting with the same load.

Key Specifications

• The chambering is .300 Winchester Magnum, the cartridge marking your rifle’s barrel must carry to use this load.
• The bullet weighs 180 grains, the weight your zero and holdovers will be built around.
• The bullet is the InterLock SP, an exposed-lead-tip design Hornady builds for controlled expansion.
• The bullet uses a secant ogive profile with an InterLock ring, which holds core and jacket together during expansion to retain mass and energy.
• Muzzle velocity is 2960 fps from a 24-inch test barrel, the starting speed behind the load’s flight time to the target.
• Muzzle energy is 3502 ft-lb from the same 24-inch test barrel, a published figure you can compare against other loads.
• Velocity at 200 yards is 2530 fps, showing how much speed the bullet carries downrange.
• Energy at 200 yards is 2557 ft-lb, the figure to check when you plan longer shots.
• Powder is loaded to conventional velocities and matched to each load, which Hornady says makes it compatible with semi-autos as well.
• Each box holds 20 rounds, enough to sight in and still carry a full load into the field.

Frequently Asked Questions

What velocity does the 180gr InterLock SP .300 Winchester Magnum load produce? Hornady’s published figures from a 24-inch test barrel are 2960 fps and 3502 ft-lb at the muzzle, dropping to 2530 fps and 2557 ft-lb at 200 yards.

How does the InterLock SP bullet expand? Hornady describes InterLock bullets as having exposed lead tips for controlled expansion, with an InterLock ring that keeps the core and jacket locked together during expansion so the bullet retains mass and energy.

Can I run this .300 Winchester Magnum load in a semi-auto rifle? Hornady says the powder is matched to each load and loaded to conventional velocities, ensuring each load is compatible with semi-autos as well.

Buy the Hornady American Whitetail .300 Winchester Magnum 180gr InterLock SP, 20-Round Box

Zero it early, keep a box in the truck, and let the load do the work when the season opens. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and browse more rifle ammunition while you are here.