.44 Magnum Magnuforce Subsonic Ammo

(3 customer reviews)


.44 Magnum Subsonic Ammunition
20 rounds per box

  • 400 grain
  • Hard cast long flat nose bullet with Hi-Tek Supercoat coating
  • New Barnes brass
  • Overall cartridge length: 1.620″
  • Velocity in an 18″ rifle barrel: 1,000 feet per second
  • Rifling twist rate requirements: 1 in 26″ twist-rate barrel or faster
  • Muzzle energy: 888 foot pounds
  • Meets SAAMI pressure specs
  • Suitable for both rifles and handguns

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


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.

44 in stock (can be backordered)

10 box maximum


NOT designed to be used in ported-barrel integrally-suppressed rifles. (confirmed by means of customer feedback, but your results may vary)

We have learned that this ammunition will reliably cycle a 99/44(Deerfield) ONLY IF you have a suppressor on your gun.  It does not cycle reliably without a suppressor on the Deerfield.


Additional information

Weight 2 lbs
Dimensions 3.5 × 3.5 × 1.75 in

3 reviews for .44 Magnum Magnuforce Subsonic Ammo

  1. Rick Brewer

    This is by far the most accurate round out of my suppressed 77/.44 Ruger. Less than 1″ at 100 yards!

  2. Arvy L. Crayton (verified owner)

    About 2 years ago I wanted to build a brush gun to hunt hogs here in Texas. I love my 308 but it was just to heavy to carry around. Thinking about this weapon I wanted it suppressed and in lever action. One of my friends said you know what would be cool ?do it in 44caliber! so a year later, my gunsmith with my input created and completed a Henry big loop SBR’ed (10.3in barrel) fashioned with a Osprey 45k can. At the time my only option was Hornady 300 gr xtp ammo which was still supersonic , so the rifle got lost in the safe. A few weeks ago I couldn’t believe my eyes when I clicked on .iqmunitions.com/product/44-magnum-magnuforce-subsonic-ammo/, I was like nooooo way. I ordered 2 boxes with pure skepticism. Once I received my order and loaded it in the rifle and pulled the trigger, I immediately knew my 44 mag was truly ready for Texas hogs. The subsonic 400 grain packs a punch with little to no recoil,(SUPER QUIET) I expected my can to be super heated but to my surprise no heat to the touch. I was able to tube load my rifle with ease. Please continue to produce these rounds!!!!!! At the time of this review I’m going to be ordering another box for a April Hog hunt and I’m leaving my 308 behind. I ready to see what this projectile will do on a Texas Hog with good shot placement. Thumbs Up to this product and I DO NOT WRITE REVIEWS BUT THIS ROUND DESERVED RAVE REVIEWS. I’ll complete another review post hunt!!!!!

  3. Frank J Salafia (verified owner)

    Bought some 44 400 grain ammo for my Dad and he just loves it. Shoots it with his single shot Ruger. Got to buy him some more, Quality Ammo at a good price.

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