Hornady 300 Blackout 208gr. Amax Subsonic ammo not consistently subsonic?

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300black
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Hornady 300 Blackout 208gr. Amax Subsonic ammo not consistently subsonic?

Post by 300black » Mon Oct 26, 2020 8:00 pm

So, I've shot Remington, Sig Sauer, and Lellier & Bellot subsonic ammo and it has all been subsonic. I bought some Hornady 300 Blackout 208gr. Amax subsonic ammo on sale and shot some and I'd say that the majority of it is not subsonic.

I wasn't sure if it was just me so I loaded my Ruger American Ranch Rifle with my Sig Sauer suppressor on it with 1/2 Hornady and 1/2 Sig Sauer subsonic ammo and shot it with my friend. The Sig Sauer was definitely quiet while the Hornady appeared to not be subsonic.

Anyone else having this problem?

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dellet
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Re: Hornady 300 Blackout 208gr. Amax Subsonic ammo not consistently subsonic?

Post by dellet » Mon Oct 26, 2020 8:39 pm

Knowing temp and velocity would be helpful.
300 Blackout, not just for sub-sonics.

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Re: Hornady 300 Blackout 208gr. Amax Subsonic ammo not consistently subsonic?

Post by 300black » Tue Oct 27, 2020 10:13 am

dellet wrote:
Mon Oct 26, 2020 8:39 pm
Knowing temp and velocity would be helpful.

Temps were about 70's, no idea on velocity.

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dellet
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Re: Hornady 300 Blackout 208gr. Amax Subsonic ammo not consistently subsonic?

Post by dellet » Wed Oct 28, 2020 9:37 am

300black wrote:
Tue Oct 27, 2020 10:13 am
dellet wrote:
Mon Oct 26, 2020 8:39 pm
Knowing temp and velocity would be helpful.

Temps were about 70's, no idea on velocity.
At 70, they will start cracking around 1125 fps. That’s pretty fast for a “subsonic round”, but I’m pretty sure that Remington got tired of complaints and their ammo no longer has Subsonic anywhere on the box. I know it was gone a couple years ago.

A lot of factory ammo is just plain loud and unless you’re shooting past 50 yards, it can be hard to hear the crack over the muzzle noise even with a good suppressor. Just not enough flight time.

I will say it’s pretty hard to find ammo louder than Remington, so it wouldn’t surprise me that the Hornady might be going super if it was louder.

If you have a place you can do it safely, it can be interesting to shoot supers suppressed starting at 5 yards from the berm and see how far you have to back up before you can actually identify a sonic crack.
300 Blackout, not just for sub-sonics.

300black
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Re: Hornady 300 Blackout 208gr. Amax Subsonic ammo not consistently subsonic?

Post by 300black » Wed Oct 28, 2020 11:36 am

dellet wrote:
Wed Oct 28, 2020 9:37 am
300black wrote:
Tue Oct 27, 2020 10:13 am
dellet wrote:
Mon Oct 26, 2020 8:39 pm
Knowing temp and velocity would be helpful.

Temps were about 70's, no idea on velocity.
At 70, they will start cracking around 1125 fps. That’s pretty fast for a “subsonic round”, but I’m pretty sure that Remington got tired of complaints and their ammo no longer has Subsonic anywhere on the box. I know it was gone a couple years ago.

A lot of factory ammo is just plain loud and unless you’re shooting past 50 yards, it can be hard to hear the crack over the muzzle noise even with a good suppressor. Just not enough flight time.

I will say it’s pretty hard to find ammo louder than Remington, so it wouldn’t surprise me that the Hornady might be going super if it was louder.

If you have a place you can do it safely, it can be interesting to shoot supers suppressed starting at 5 yards from the berm and see how far you have to back up before you can actually identify a sonic crack.

Ah. Thanks.


The Remington subsonics have been some of the best and most reliable for me.

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