Federal Fusion Subsonic ammunition (brand part no. F4570FS1SUB) takes the 45-70 Government’s proven Fusion bonded bullet and re-engineers it specifically for suppressed shooting. Federal loads the 300-grain solid base bullet to roughly 1000 fps, falling just below the sound barrier to eliminate the harsh supersonic crack that a suppressor alone can’t silence. That subsonic tuning still delivers effective expansion and accuracy, giving hunters whisper-quiet performance without sacrificing terminal effectiveness on game. Each box holds 20 rounds of this suppressor-optimized load.

Key Specifications

• Chambered in 45-70 Government, a hard-hitting classic hunting cartridge
• Loaded with a 300-grain Fusion bonded, solid base bullet
• Loaded to roughly 1000 fps, a genuine subsonic velocity
• Falling below the sound barrier eliminates the supersonic crack a suppressor alone can’t silence
• Still delivers effective expansion and accuracy despite the reduced velocity
• Purpose-built as a suppressor-optimized hunting load
• Confirmed cost of $2.18 per round for this 20-round box
• Ships at approximately 1.6 lb per box
• Packaged 20 rounds per box

Frequently Asked Questions

Is this a genuine subsonic load? Yes, Federal loads it to roughly 1000 fps, just below the speed of sound, specifically for suppressed shooting.

Does the bullet still expand at subsonic velocity? Yes, Federal engineered this Fusion bullet to deliver effective expansion and accuracy even at the reduced subsonic velocity.

Buy the Federal Fusion Subsonic 45-70 Government 300gr Ammunition

Order this Federal Fusion Subsonic load through our Federal Ammunition lineup of rifle ammunition for quiet, suppressed hunting. Order from our Lubbock, Texas gun shop and it ships fast to your door.