Hsm Subsonic 45-70 Hitek 550Gr Hcfn 20/25

HSM Subsonic 45-70 ammunition delivers heavy, slow-moving rounds built for hunters who want to stay off the decibel charts. This is serious subsonic ammunition for centerfire rifle hunters running lever-action, bolt-action, or single-shot platforms. Each round launches a 550-grain hard cast flat-nose bullet, topped with HSM's Hi-Tek Supercoat for smooth feeding and corrosion resistance. At subsonic velocities from an 18-inch barrel, you get the energy you need for larger game without the supersonic crack—ideal when hearing protection is impractical or when you want to minimize noise signature in the field.

The 550-grain bullet weight is substantial enough to retain energy and momentum across typical hunting distances, and the flat-nose profile makes it effective on medium to large game. Because subsonic loads operate below the sound barrier, they pair well with suppressed rifles and hearing-safe hunting setups. The Hi-Tek coating reduces barrel fouling compared to traditional lead bullets, which means less cleaning between sessions and a longer service life for your rifle.

These rounds come packaged in convenient 20-round boxes, with 25 boxes per case for serious stockers. If you're running a 45-70 lever gun or bolt rifle with a 1:20 or faster rifling twist, HSM's subsonic offering gives you a legitimate alternative to commercial supersonic hunting loads when trajectory and ballistics match your needs.

Key Features

• 550-grain hard cast flat-nose bullet with Hi-Tek Supercoat for reliable feeding and reduced fouling
• Subsonic velocity from 18-inch barrels—rated for hearing-safe hunting
• Hard cast construction resists deformation and extends downrange energy
• Suitable for lever-action, bolt-action, and single-shot 45-70 rifles
• Packaged 20 rounds per box; 25 boxes per case for bulk shooters

Specifications

Frequently Asked Questions

Is this ammunition suitable for my 45-70 lever-action or bolt-action rifle?

Yes. HSM's subsonic 45-70 is designed for all modern lever-action, bolt-action, and single-shot rifles chambered in 45-70 Government, provided your rifle has a rifling twist of 1:20 or faster. Check your barrel twist before purchasing to ensure reliable bullet stability.

What makes this subsonic ammunition different from standard 45-70 hunting loads?

This load operates at subsonic velocity—approximately 1000 feet per second from an 18-inch barrel—which means the bullet never breaks the sound barrier. That significantly reduces the rifle's report, making it popular for suppressed rifles and hearing-safe hunting scenarios where you want to minimize noise without sacrificing bullet weight and stopping power.

Why is the Hi-Tek coating on the bullet beneficial?

The Hi-Tek Supercoat reduces copper and lead fouling inside your barrel, minimizing buildup that leads to rust and corrosion. This means easier cleaning and less maintenance between shooting sessions, which is especially valuable if you hunt or shoot regularly with the same rifle.

How much ammunition do I get per case?

Each case contains 25 boxes of 20 rounds, for a total of 500 rounds per case.