Remington UMC Mega Pack 300 Blackout 220gr OTFB - 200 Rounds

The Remington UMC Mega Pack 300 Blackout 220gr OTFB delivers affordable, reliable centerfire rifle ammunition in a high-volume package built for shooters who demand consistent performance without breaking the bank. Whether you're running suppressed subsonic loads through a precision rifle, training on the range, or stocking up for regular shooting sessions, this 200-round mega pack gives you the volume you need at a value that makes frequent practice realistic. Loaded in the USA, UMC ammunition has earned its reputation as dependable, no-nonsense ammo for serious shooters.

The 220-grain open tip flat base bullet is a time-tested design for the 300 Blackout platform, delivering 940 feet per second at the muzzle with 431 foot-pounds of energy. That ballistic profile makes it well-suited to subsonic shooting—a primary reason many reloaders and shooters favor the 300 Blackout in the first place. You get the accuracy and consistency UMC is known for, just at a price point that lets you shoot more without apology.

For AR-15 builders, precision rifle enthusiasts, or anyone who's committed to the 300 Blackout cartridge, a 200-round mega pack means fewer trips to restock and more trigger time. Remington's manufacturing standards ensure uniform performance across the entire lot, so you can focus on your shooting rather than chasing variance round to round.

Key Features

• 200-round mega pack—bulk volume at a practical price point
• 220-grain open tip flat base bullet design
• 940 fps muzzle velocity optimized for subsonic and standard 300 Blackout applications
• USA-manufactured by Remington for consistent quality and performance
• Reliable ignition and consistent velocity for training, range work, and precision shooting

Specifications

Frequently Asked Questions

Is this 300 Blackout ammo subsonic?

At 940 fps muzzle velocity, these rounds are right in the subsonic ballpark—low enough to be hearing-safe through a suppressed AR-15 without hearing protection, though individual results vary by firearm and suppressor. Many shooters use 300 Blackout precisely for subsonic applications, and this load is a natural fit for that use case.

What type of rifle does this ammo work in?

300 Blackout ammunition fires in any AR-15 or modern bolt-action rifle chambered in 300 Blackout. No special modifications are needed—just ensure your magazine is rated for the cartridge and your firearm is properly zeroed.

Is UMC ammo good quality for the price?

UMC (Unique Marksmanship Cartridge) is Remington's value line and has a strong track record for reliability and consistent performance. It's loaded to the same quality standards as Remington's premium lines, making it an excellent choice for volume shooting, training, and practice where budget matters but performance can't be sacrificed.

Why 220 grains for 300 Blackout?

The 220-grain bullet weight is ideal for subsonic and standard 300 Blackout loads. It's heavy enough to deliver energy and terminal performance while staying stable in the subsonic velocity range, which is why it's the go-to choice for precision AR-15 shooters and suppresssor users.