AR-15 300 Blackout

BenL · Jan 27, 2018

platoonDaddy said:
Just read the 1st post of the following link: http://www.300blktalk.com/forum/viewtopic.php?f=128&t=99797

Continue on down to the kaaaaaaaaaaaaaboom picture

A little JB Weld and good as new.

outrider58 · Jan 27, 2018

OnTarget said:
Does anybody feel comfortable with .300 BO AR lightweight barrels? It would appear safer to me to have a heavy barrel with this more powerful load.
Also, wouldn't the .300 lightweight barrel allow for more recoil than heavy?

Note: I'm talking about 8.5" length barrel.

Couple things. 1) Velocity of the 300 AAC (supersonic) is roughly half that of a standard 5.56 round. 2) A heavy barrel (if you can find a decent one) will dampen recoil due to it's greater mass as compared to a light barrel, albeit, ever so slightly. 3) Shorter barrels tend to have lighter recoil. Because of their shorter length, less energy is built up before the round leaves the barrel.

OnTarget · Jan 27, 2018

outrider58 said:
Couple things. 1) Velocity of the 300 AAC (supersonic) is roughly half that of a standard 5.56 round. 2) A heavy barrel (if you can find a decent one) will dampen recoil due to it's greater mass as compared to a light barrel, albeit, ever so slightly. 3) Shorter barrels tend to have lighter recoil. Because of their shorter length, less energy is built up before the round leaves the barrel.

outrider: Thank you for response, If I am reading your post properly, it seems that you made an argument more for a lightweight barrel, than heavy, because of velocity factor and short barrel effects. Did I read it right?

outrider58 · Jan 27, 2018

OnTarget said:
outrider: Thank you for response, If I am reading your post properly, it seems that you made an argument more for a lightweight barrel, than heavy, because of velocity factor and short barrel effects. Did I read it right?

Not exactly. Velocity has nothing to do with barrel weight. That is a barrel length issue. The shorter the barrel in a given round equals lower velocities equals less recoil.
Some people feel a heavy barrel is required on a 300 AAC because it is possible to chamber and fire a 5.56/.223 through a blackout barrel even though no one in their right mind would try such a fool thing. I'll leave that decision to individual preference. My other point was, 300 AAC is a medium velocity round and considered by most to be a 'pistol' cartridge. The recoil is rather tame, especially in subsonic loadings, in comparison with the 5.56. Hope this helps.

Sent from my XT1585 using Tapatalk

OnTarget · Jan 27, 2018

Thanks! Understood.

danb · Jan 27, 2018

outrider58 said:
Some people feel a heavy barrel is required on a 300 AAC because it is possible to chamber and fire a 5.56/.223 through a blackout barrel even though no one in their right mind would try such a fool thing.

Hold my beer.

dreadpirate · Jan 27, 2018

outrider58 said:
My other point was, 300 AAC is a medium velocity round and considered by most to be a 'pistol' cartridge.

Why would you (or others) consider 300 Black a pistol cartridge? Velocity? Not saying your wrong, as 300 Black supersonic can be, well, just above supersonic velocity

Just never looked at that way.

outrider58 · Jan 27, 2018

dreadpirate said:
Why would you (or others) consider 300 Black a pistol cartridge? Velocity? Not saying your wrong, as 300 Black supersonic can be, well, just above supersonic velocity Just never looked at that way.

One reason, you load the cartridges with pistol powders mostly.

Sent from my XT1585 using Tapatalk

outrider58 · Jan 27, 2018

danb said:
Hold my beer.

Sent from my XT1585 using Tapatalk

Pinecone · Jan 29, 2018

danb said:
Hold my beer.

No, the hold my beer moment is firing a .300 BlackOut round in a 5.56 rifle.

ADCOLE · Feb 3, 2018

migwl300 said:
I am looking to purchase this firearm out of state.

https://www.smith-wesson.com/firearms/mp-15-300-whisper-0

Would it be legal to bring it back to Maryland over summer break? I would leave the 30round mag at my out of state residence and bring only 10 round mags

Thanks

Unless S&W changed the barrel design, that is not a HBAR barrel and it should come up as being restricted if you try to purchase that riffle.

DaemonAssassin · Feb 4, 2018

ADCOLE said:
Unless S&W changed the barrel design, that is not a HBAR barrel and it should come up as being restricted if you try to purchase that riffle.

Nope.

It is a caliber other than 223/556. He can legally buy it out of state and bring it back. The HBAR rule applies only to the 223/556, because back in 1994, the Colt Sporter HBAR was only chambered in 223/556. IIRC, Colt never made an HBAR in anything other than 223/556.

ADCOLE · Feb 4, 2018

DaemonAssassin said:
Nope.

It is a caliber other than 223/556. He can legally buy it out of state and bring it back. The HBAR rule applies only to the 223/556, because back in 1994, the Colt Sporter HBAR was only chambered in 223/556. IIRC, Colt never made an HBAR in anything other than 223/556.

Why is it restricted upon trying to purchase? Ran into this issue several years ago when trying to purchase just the upper. I was told the barrel was not HBAR and it could not be shipped to the state of Maryland. I ended up purchasing the upper from another state but has since changed out the barrel with a Blackhole Weaponry Barrel. The S&W barrel begin to taper after the gas port consistently to the muzzle.

AlBeight · Feb 4, 2018

ADCOLE said:
Why is it restricted upon trying to purchase? Ran into this issue several years ago when trying to purchase just the upper. I was told the barrel was not HBAR and it could not be shipped to the state of Maryland. I ended up purchasing the upper from another state but has since changed out the barrel with a Blackhole Weaponry Barrel. The S&W barrel begin to taper after the gas port consistently to the muzzle.

From my experience you can’t buy anything from Gallery of Guns. Here’s a screenshot of me trying to buy a Taurus Judge revolver. Restricted.

Bootknife · Feb 4, 2018

I bought My DD 300 Upper from an IP and have been VERY happy with it.

teratos · Feb 4, 2018

ADCOLE said:
Why is it restricted upon trying to purchase? Ran into this issue several years ago when trying to purchase just the upper. I was told the barrel was not HBAR and it could not be shipped to the state of Maryland. I ended up purchasing the upper from another state but has since changed out the barrel with a Blackhole Weaponry Barrel. The S&W barrel begin to taper after the gas port consistently to the muzzle.

Go to Duffy’s, The Gun Shop, Engage, or any of our other IPs. They’ll cut through the BS.

AR-15 300 Blackout

The #1 community for Gun Owners of the Northeast

Member Benefits:

John Galt Speaking.

Eats Bacon Raw

Ultimate Member

Eats Bacon Raw

Ultimate Member

dont be a dumbass

Ultimate Member

Eats Bacon Raw

Eats Bacon Raw

Ultimate Member

Member

Why should we Free BSD?

Member

Attachments

Member

Attachments

Ultimate Member

My hair is amazing

Users who are viewing this thread

Log in

Forum statistics