300 blackout

[punisher12b]

anybody here have an 8 or 8.5 inch upper i could borrow for a range visit im in the gaithersburg area..

i just want to make sure my loads dont keyhole.. and fly straight thats all..and id rather not buy another complete upper to test out of

 

[iH8DemLibz]

A reload not keyholing in someone else's barrel doesn't mean the same reload won't keyhole in the barrel you buy.

 

[punisher12b]

I understand. But my upper is integrally suppressed. So just wanna do what I can. Ya know remove some doubt

 

[BradMacc82]

Integrally suppressed barrel too.

Can't really offer much more than, say a prayer and let it eat.

 

[punisher12b]

Brad. Instead of screwing with cast loads upfront imma do the hodgons recipe for 208amax using lil gun

Almost bought a hr 300 single shot to test

 

[outrider58]

Integrally suppressed barrel too.

Can't really offer much more than, say a prayer and let it eat.

or nuke it from space...it's the only way...

 

[punisher12b]

??????

or nuke it from space...it's the only way...

Im just concerned with a baffle strike. Thats all. Ill be a pissed off sob if the day I get it out of atf jail i grenade the suppressor

 

[BigDaddy]

Surely the interaction of suppressor, caliber,barrel length and velocity have been worked out by trial an error if not the Greenhill formula.

 

[outrider58]

??????



Im just concerned with a baffle strike. Thats all. Ill be a pissed off sob if the day I get it out of atf jail i grenade the suppressor

I don't blame you. that would concern me too. but what kind of load are you working up?

 

[punisher12b]

208 amax. Using hodgons website data. Lil gun. I want to shoot hitek coated cast bullets inhave 300 203grain. And 100 240gain lead ones. Both are bout 10c a peice if i get a load right i can shoot subs for like 20c a peice

 

[punisher12b]

Range trip successful. Shot 8.1 and 8.3 charges with no baffel strikes

 

[Nodak Kid]

This is a bit off course, but wanted to ask if a 300 blackout complete uppers fall into the same bucket as the 5.56/223 HBAR? Meaning, does the barrel prolife have to meet the same HBAR standards. I was under the impression the HBAR would not apply to the 300 and almost any profile barrel can be installed. Have a complete lower, and just ordered the 300 upper. Prior to mating them, wanted to ensure this is okay.

Thank You

 

[DaemonAssassin]

This is a bit off course, but wanted to ask if a 300 blackout complete uppers fall into the same bucket as the 5.56/223 HBAR? Meaning, does the barrel prolife have to meet the same HBAR standards. I was under the impression the HBAR would not apply to the 300 and almost any profile barrel can be installed. Have a complete lower, and just ordered the 300 upper. Prior to mating them, wanted to ensure this is okay.

Thank You

Due to the diameter of the bore, it has to be an HBAR, to accommodate the diameter of the bore and maintain the structural strength of the barrel.

 

[Nodak Kid]

appreciate the input. Sorry to say, I wasn't very clear with the post. From a legality standpoint, does the rifle upper have to be HBAR?

 

[Sticky]

If you get a 300blk upper, it is an HBAR, regardless of how it is described. Well, since MD hasn't really 'defined' yet what an HBAR is, the barrel profile of a 7.62 bbl will meet the accepted definition by most

 

[Marauder]

Due to the diameter of the bore, it has to be an HBAR, to accommodate the diameter of the bore and maintain the structural strength of the barrel.

Wilson Combat has lightweight 300blk barrels and I bet they are structurally sound. http://shopwilsoncombat.com/Wilson-Combat-Match-Grade-Barrel-300-AAC-Blackout-Tactical-Lightweight-16-1-8-Twist-Stainless/productinfo/TR-300LW16/
http://www.wilsoncombat.com/press/TR-300LW16.pdf

 

[Sticky]

Even that barrel with it's tapering, still appears to have a .750" diameter behind the gas block, which should keep it HBAR profile by definition. I think.. lol

 

[Sticky]

Even that barrel with it's tapering, still appears to have a .750" diameter behind the gas block, which should keep it HBAR profile by definition. I think.. lol

Oops, just looked at the schematic and it is only .700 in the tapered area... that could be an issue for someone building an HBAR..

 

[Marauder]

Oops, just looked at the schematic and it is only .700 in the tapered area... that could be an issue for someone building an HBAR..

Yeah, that's why this statement is not true.

Originally Posted by DaemonAssassin
Due to the diameter of the bore, it has to be an HBAR, to accommodate the diameter of the bore and maintain the structural strength of the barrel.

We don't want anyone getting in trouble...

 

[Klunatic]

Are you planning on shooting cast bullets through your can? Bad idea to begin with. Probably voids your suppressor warranty and you will most likely end up with a baffle strike and at a minimum will lead up your suppressor.