Osprey 9mm Suppressor on 300 Blackout

[beretta_maven]

Have a question for anyone familiar with the Osprey suppressors. I have the 9mm Osprey and I'm toying with the idea of building a 300 Blackout pistol to SBR (barrel length would be 10.5"). According to the Osprey specs, the 9mm can is rated for 300 Blackout. I'm also considering doing a Form 1 to build a can using my NFA trust, but am torn between building a 7.62 (to handle 300 and 5.56) or 5.56 (and using the Osprey for the Blackout).

Any suggestions?

Thanks in advance.

 

[F-Stop]

I am nervous using 9mm can for 300blk subs. I don't like taking the chance of having supers running through it.

 

[beretta_maven]

I am nervous using 9mm can for 300blk subs. I don't like taking the chance of having supers running through it.

I fully understand that concern, but my intent would be to only run subsonic ammo through the gun - don't think I'd ever have a need for supersonic 300 blk ammo.

 

[outrider58]

The muzzle energy ratings are close-9mm 300-500(+p) vs. 300 AAC 450-520 ft.lbs. Once you go supersonic the 300AAC more than doubles which, I would guess, would be no bueno.

 

[fabsroman]

Why does the speed of the round matter when it goes through a suppressor? I mean, I understand that super sonic makes a lot more noise, and that more powder means more gas and more heat. Just wondering if there is an issue pertaining to a baffle strike, etc., or it is just a matter of not suppressing the noise enough.

 

[outrider58]

Why does the speed of the round matter when it goes through a suppressor? I mean, I understand that super sonic makes a lot more noise, and that more powder means more gas and more heat. Just wondering if there is an issue pertaining to a baffle strike, etc., or it is just a matter of not suppressing the noise enough.

I'm no engineer, but I'm thinking in terms of muzzle blast/pressure and the can's ability to withstand it. That is what really makes the big difference between a rifle can and a pistol can and why one is usually a sealed/welded unit and the other is easily disassembled.

 

[rbird7282]

If the Osprey is rated for 300 Blackout then I wouldn't worry about it.


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[DutchV]

Why does the speed of the round matter when it goes through a suppressor? I mean, I understand that super sonic makes a lot more noise, and that more powder means more gas and more heat. Just wondering if there is an issue pertaining to a baffle strike, etc., or it is just a matter of not suppressing the noise enough.

Not speed, but pressure. Supersonic 300 Blackout runs at higher pressures than subsonic. (Subsonic 300 Blackout really is a pistol round if you look at the load charts. Supers are rifle rounds.)

Running supers through a can that isn't rated for them would be ugly.

 

[dontpanic]

Have a question for anyone familiar with the Osprey suppressors. I have the 9mm Osprey and I'm toying with the idea of building a 300 Blackout pistol to SBR (barrel length would be 10.5"). According to the Osprey specs, the 9mm can is rated for 300 Blackout. I'm also considering doing a Form 1 to build a can using my NFA trust, but am torn between building a 7.62 (to handle 300 and 5.56) or 5.56 (and using the Osprey for the Blackout).

Any suggestions?

Thanks in advance.

I know the Osprey is rated for subsonic 300blk, but it is really a poor choice. You need to shim the mount to each gun. I believe it is best just dedicated to one pistol.

As far as building your own suppressor. For your first one build a .30 caliber. Then you will be much more flexible if your needs change.

 

[HordesOfKailas]

I fully understand that concern, but my intent would be to only run subsonic ammo through the gun - don't think I'd ever have a need for supersonic 300 blk ammo.

Are you SURE you only want to go subsonic? Because supersonic is a lot of funnnnnn.

 

[lkenefic]

Duh... I just posted a different thread before seeing this one... thanks for the info!

 

[beretta_maven]

Are you SURE you only want to go subsonic? Because supersonic is a lot of funnnnnn.

To be honest, I've never fired a 300 blk round so I don't know the difference in the feel between sub and supersonic - but I've already got several AR-15s and two more lowers to build and I figured I'd go with a 300 blk pistol. Then I need to figure out exactly what I want to do before the BATF change goes through for NFA trusts.

 

[lkenefic]

If you knew you were going to build a suppressor to handle sub and super sonic 300 BLK as well as have it pull duty as a 9mm can.... how much "over engineered " would it have to be? I suppose if you knew you would only be running subs through it, the dimensions and capacity of a 9mm can would be ok...

 

[fabsroman]

To be honest, I've never fired a 300 blk round so I don't know the difference in the feel between sub and supersonic - but I've already got several AR-15s and two more lowers to build and I figured I'd go with a 300 blk pistol. Then I need to figure out exactly what I want to do before the BATF change goes through for NFA trusts.

Better to build the suppressor for supersonic and never want to fire supersonic through it, than to build it smaller for subsonic and then want to shoot supersonic through it.

Other than the noise, I have no idea why people would want to shoot subsonic versus supersonic. Does breaking the sound barrier have something to do with accuracy? More speed means more energy on target. More energy on target means better knock down power and a greater chance of putting game down or a person completely out of a fight.

I guess I can see the utility in reduced noise when shooting/hunting in urban areas where the noise would possibly piss of the neighbors.

 

[HordesOfKailas]

To be honest, I've never fired a 300 blk round so I don't know the difference in the feel between sub and supersonic - but I've already got several AR-15s and two more lowers to build and I figured I'd go with a 300 blk pistol. Then I need to figure out exactly what I want to do before the BATF change goes through for NFA trusts.

Well I get that. I just meant the supersonic blackout rounds are enjoyable. More recoil and, IMO, more explosive impact. Fun for shooting steel or interesting (READ: one shot) targets. I haven't shot subsonic but I'm not particularly interested due to pistol-like muzzle energy. Either way, I don't doubt you'll have a blast.

 

[clandestine]

Any quality 9mm can is 100% fine for .300 Blackout subs. If it has a Booster you have to disable it on a fixed barrel firearm though (Remove the springa and put in a spacer). If you mistakenly shot a super through it, it may bulge the tube where the blast chamber is, or destroy the tube. Just be careful.

For those who question the practicality of .300 subs, you need to do some research.

 

[beretta_maven]

I know the Osprey is rated for subsonic 300blk, but it is really a poor choice. You need to shim the mount to each gun. I believe it is best just dedicated to one pistol.

As far as building your own suppressor. For your first one build a .30 caliber. Then you will be much more flexible if your needs change.

Please correct me if I'm wrong but from what I've been reading it appears that if I build a can for a .30 then I can't change out the end cap to fit a 5.56 barrel - is the correct? If this is the case, then I would need to actually build two cans - one for the 300blk and one for a 5.56.

Also, I don't quite understand your comment on having to shim the mount to each gun on the Osprey. I have two types of pistons - 13.5 x 1 (LH) and 1/2 x 28 XL (for my Berettas), and I don't have to shim going between different guns.

 

[fabsroman]

Please correct me if I'm wrong but from what I've been reading it appears that if I build a can for a .30 then I can't change out the end cap to fit a 5.56 barrel - is the correct? If this is the case, then I would need to actually build two cans - one for the 300blk and one for a 5.56.

Not correct. The threading on the barrels just have to be the same, or you just need to buy an adapter. I plan on using the same suppressor for .223, 5.56, and .300blk.

1/2x28
5/8x24

There are others, but those are the most common for rifles.

http://blog.silencershop.com/common-barrel-thread-reference/

Thread adapters:

http://www.gem-tech.com/store/pc/THREADED-ADAPTERS-c48.htm

 

[lkenefic]

I was drawn to the 300 BLK sub cartridge because of the platform, but more because it's a 220 grain bullet at 1000+ fps. Ballistics tables show th his round still at 950+ fps at 200 yards. Thus, it's still pretty close to 500 ft- lbs of energy. This doesn't change much at 300 yards either.

 

[beretta_maven]

Any quality 9mm can is 100% fine for .300 Blackout subs. If it has a Booster you have to disable it on a fixed barrel firearm though (Remove the springa and put in a spacer). If you mistakenly shot a super through it, it may bulge the tube where the blast chamber is, or destroy the tube. Just be careful.

For those who question the practicality of .300 subs, you need to do some research.

Thanks for the info. I did purchase a spacer for the Osprey for fixed barrels, now I just need to get a thread adapter since you can't get a piston with 5/8 X 24 threads.