45-70 Subsonic Ammo For Sale

45-70 subsonic ammo is a specialized load designed to keep bullet velocities under the speed of sound, typically around 1,050 feet per second. That makes it ideal for suppressed shooting, offering reduced noise without sacrificing the hard-hitting performance that 45-70 Govt. is known for.

These loads pair heavy-for-caliber bullets, often 500 grains or more with reduced powder charges to stay below the supersonic threshold. The result? Minimal report when suppressed, excellent momentum, and deep penetration at close to moderate distances.

Why Choose Subsonic 45-70?

• Suppressed Shooting: When paired with a suppressor, subsonic 45-70 delivers exceptional sound reduction with impressive terminal performance.
• Heavy Bullet Weight: Often 500+ grains, these bullets maintain energy through mass, not speed, making them ideal for brush hunting or defensive use.
• Backcountry Utility: Quiet, hard-hitting, and reliabl. Perfect for defense against predators or hogs without drawing unwanted attention.

How Subsonic 45-70 Compares to Standard Loads

Traditional 45-70 Govt. ammo typically fires a 300- to 405-grain bullet at 1,300 to 2,000 fps, generating far more muzzle energy but with significantly more noise and recoil. Subsonic loads trade velocity for stealth, offering a much softer shooting experience and making them easier to shoot accurately offhand or from odd angles.

While subsonic rounds have a more arched trajectory and reduced effective range, they excel in specialized roles — especially in suppressed rifles or situations where overpenetration and noise are a concern.

Ballistics of 45-70 Subsonic Ammo

Typical subsonic 45-70 loads push a 500-grain bullet at around 1,050 fps, generating over 1,200 foot-pounds of energy. While this is significantly lower than standard loads, it's more than enough for close-range hunting and personal defense in the right hands.

For a deeper dive into trajectory, drop, and energy stats, check out our full 45-70 ballistics charts.

Written by

Molly Carter