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IQMunitions Magnuforce Subsonic 45-70 550 grain

45-70 Magnuforce Subsonic Ammo 550gr

Name: 45-70 Magnuforce Subsonic Ammo 550gr
SKU: 945
Availability: InStock
Rating: 5.00 (2 reviews)

Rated 5.00 out of 5 based on 2 customer ratings

(2 customer reviews)

Price range: $52.00 through $65.00

.45-70 Govt Subsonic Ammunition
20 rounds per box

550 grain
Hard cast long flat nose bullet with Hi-Tek Supercoat coating
New Starline brass
Overall cartridge length: 2.530″
Velocity in an 18.5″ rifle barrel: 1,000 feet per second
Rifling twist rate requirements: 1 in 20″ twist-rate barrel or faster
Muzzle energy: 1,230 foot pounds
Meets SAAMI pressure specs

-Price per each-

The flat rate shipping only applies to the lower 48, USA. As well, it is not legal to send ammunition via US Mail; all ammunition ships via UPS Ground.

Condition

Clear

Max qty: 10

10 box maximum

SKU: N/A Categories: 45-70, Magnuforce Subsonic Tags: 45-70, 45-70 Govt, Ammo, Ammunition, Magnuforce, Subsonic, suppressed

Description

.45-70 Govt Subsonic Ammunition
20 rounds per box

550 grain
Hard cast long flat nose bullet with Hi-Tek Supercoat coating
New Starline brass
Overall cartridge length: 2.530″
Velocity in an 18.5″ rifle barrel: 1,000 feet per second (as shot from our Henry X Model 45-70 Lever Action)
- 944 FPS @ 100 yards
Rifling twist rate requirements: 1 in 20″ twist-rate barrel or faster
Muzzle energy: 1,230 foot pounds
- 1090 Ft-Lbs @ 100 yards
Meets SAAMI pressure specs

-Price per 20rd box-

Want to know more about this round? Check out our blog post.

Additional information

Weight	2.5 lbs
Dimensions	7 × 3.5 × 1.5 in
Condition	New, Cosmetically Blemished

2 reviews for 45-70 Magnuforce Subsonic Ammo 550gr

Rated 5 out of 5

Thomas trimble (verified owner) – November 29, 2022

Great reliable ammo, amazing suppressed, and awesome to hunt with
Rated 5 out of 5

Scott (verified owner) – April 17, 2025

This ammo is super accurate. My base is 50 yards and strikes same hole. It strikes under an inch at 100 yards. With a 46v suppressor on a Ruger 45-70 lever rifle and it is very quiet. I just bought 5 more boxes.