300 blk

smokey · Apr 29, 2019

https://www.google.com/url?sa=t&sou...FjAAegQIAhAB&usg=AOvVaw2KvaaZ923PEYqR62ezc0nq
Here's a fun source of info on 300 blk

quad · Apr 30, 2019

Just an update...ended up going with a 300blk with a 10.5 inch barrel. I think I’m gonna really like it. I love my 10.5 inch 5.56. Thanks to all for the advice and help.

WildWeasel · Apr 30, 2019

smokey0118 said:
https://www.google.com/url?sa=t&sou...FjAAegQIAhAB&usg=AOvVaw2KvaaZ923PEYqR62ezc0nq
Here's a fun source of info on 300 blk

Great info.

DaemonAssassin said:
And this is where I call on a 300BLK not being accurate. I parked 3 consecutive though the same hole at 100 yards. My friends were on the spotting scopes, watching me shoot. I actually walked the rounds around on the target, so the spotters could see the impacts on target. But then again, I built my AR's, so I accurize them during the build process. Do you build and accurize?

https://www.mdshooters.com/showthread.php?t=213710

If you don't feel like scrolling through the whole thread, I'll give you some highlight posts.
https://www.mdshooters.com/showpost.php?p=4896191&postcount=12
https://www.mdshooters.com/showpost.php?p=4896221&postcount=14
https://www.mdshooters.com/showpost.php?p=4896240&postcount=19

For some reason, I'm being denied access to these links. New membership/ low post count?

Build, yes. Accurize, no. Between GI/mid grade parts and the distances I usually shoot, I didn't see it as worth the extra time or money to squeeze out all the slop. Although with good factory loads or my reloads, my 556 is subMOA, and just a bit over with ball ammo. Still working on finding the best factory load, and ultimately reloads, for my .300. Top of my head, I think maybe 1.75-2 MOA is about what I was getting, and that's about what a few friends and family were seeing. Can it be better? Absolutely. Time, money, tinkering, and practice all can improve accuracy. I'm not saying .300 is inaccurate either; just from what I've experienced, seen, and read, BLK is usually not as accurate as other rounds. All this said, a good gun and a good shell will certainly outperform me...

What are your accurizing procedures and parts list? Maybe a really nice target HBAR is in my future...

outrider58 · Apr 30, 2019

DaemonAssassin said:
And this is where I call on a 300BLK not being accurate. I parked 3 consecutive though the same hole at 100 yards. My friends were on the spotting scopes, watching me shoot. I actually walked the rounds around on the target, so the spotters could see the impacts on target. But then again, I built my AR's, so I accurize them during the build process. Do you build and accurize?

https://www.mdshooters.com/showthread.php?t=213710

If you don't feel like scrolling through the whole thread, I'll give you some highlight posts.
https://www.mdshooters.com/showpost.php?p=4896191&postcount=12
https://www.mdshooters.com/showpost.php?p=4896221&postcount=14
https://www.mdshooters.com/showpost.php?p=4896240&postcount=19

I remember that day. I also remember putting three rounds in the same with my 300blk SBR

WildWeasel said:
Great info.

For some reason, I'm being denied access to these links. New membership/ low post count?

Build, yes. Accurize, no. Between GI/mid grade parts and the distances I usually shoot, I didn't see it as worth the extra time or money to squeeze out all the slop. Although with good factory loads or my reloads, my 556 is subMOA, and just a bit over with ball ammo. Still working on finding the best factory load, and ultimately reloads, for my .300. Top of my head, I think maybe 1.75-2 MOA is about what I was getting, and that's about what a few friends and family were seeing. Can it be better? Absolutely. Time, money, tinkering, and practice all can improve accuracy. I'm not saying .300 is inaccurate either; just from what I've experienced, seen, and read, BLK is usually not as accurate as other rounds. All this said, a good gun and a good shell will certainly outperform me...

What are your accurizing procedures and parts list? Maybe a really nice target HBAR is in my future...

Yeah. Post count i guess, assuming for some reason that thread was in the "Water Cooler" where you must have >50 post to gain access.

DaemonAssassin · Apr 30, 2019

WildWeasel said:
Great info.

For some reason, I'm being denied access to these links. New membership/ low post count?

Build, yes. Accurize, no. Between GI/mid grade parts and the distances I usually shoot, I didn't see it as worth the extra time or money to squeeze out all the slop. Although with good factory loads or my reloads, my 556 is subMOA, and just a bit over with ball ammo. Still working on finding the best factory load, and ultimately reloads, for my .300. Top of my head, I think maybe 1.75-2 MOA is about what I was getting, and that's about what a few friends and family were seeing. Can it be better? Absolutely. Time, money, tinkering, and practice all can improve accuracy. I'm not saying .300 is inaccurate either; just from what I've experienced, seen, and read, BLK is usually not as accurate as other rounds. All this said, a good gun and a good shell will certainly outperform me...

What are your accurizing procedures and parts list? Maybe a really nice target HBAR is in my future...

A well built 300BLK is incredibly accurate. During the build process, if you don't take the time to eliminate the "slop", then you are doing the platform and cartridges you shoot a huge disservice. Using quality components and building the AR properly is the difference between a sub-MOA gun and a 2-5 MOA gun. I've also built 556 AR's that almost rival my Shilen barreled AR for accuracy at 100 yards.

I built a 300BLK for a friend of mine to go deer hunting and that rifle is sub-MOA all day long with good ammo. That rifle is using a barrel that runs 100 bucks from the manufacturer. But the pics are from my rifle.

20 rounds at 50 yards by one of the guys that was spotting for me. He hadn't shot an AR/M16 since he was in the military back in the late 70's or early 80's.

8 rounds at 100 yards by me. Shot in the black was my first shot at 100 and I called it as a flier as soon as the trigger broke.

The platform.

DaemonAssassin · Apr 30, 2019

outrider58 said:
I remember that day. I also remember putting three rounds in the same with my 300blk SBR

Yeah. Post count i guess, assuming for some reason that thread was in the "Water Cooler" where you must have >50 post to gain access.

It was a good day.

Our RSO friend was very chill and relaxed, while we were following the range rules. :lol2:

outrider58 · Apr 30, 2019

DaemonAssassin said:
It was a good day.

Our RSO friend was very chill and relaxed, while we were following the range rules.

OLM-Medic · Apr 30, 2019

For those of you who have a 16" and something like a 8" suppressed, have you noticed any significant difference in sound reduction in the longer barrels?

holesonpaper · Apr 30, 2019

I have a 16” and 10.5” and there might be a little difference between but not a ton although I’ll be honest, I don’t compare the decibels side by side.

outrider58 · Apr 30, 2019

I have not noticed a discernable difference in 5.56, but that is not shooting subsonic.

WildWeasel · May 2, 2019

Thanks for all the info. After buying and trying a GI trigger for my first rifle, to include filing and polishing it, I threw it out. Not worth the money or time... But it's that first rifle (556) that shoots sub moa, in spite of the chrome lined, non free floated barrel, standard BCG, receiver slop, etc. Next time I take the BLK to the range, I'll make sure to document it all, take my time, save targets, and do a range report. The lower is all RRA (yeah I know they've done some dumb stuff lately...), with their 2 stage trigger, and it's really a tight fit to the upper. I can't recall brand on the upper ATM but it's a 16" free floated barrel (HBAR of course...) so as long as that's halfway decent, it checks most of the boxes for what should be a fairly accurate gun. FWIW, that lower shoots great on the 556. So the likely culprits are the upper, the shells, or me...

We'll see. But honestly, even if it only ends up being a 1.5-2 MOA rifle, I'd still be happy. The super and subsonic options are great, it hits like an AK in an AR format, and I'll have a great reason to buy or build a subMOA rifle...

outrider58 · May 3, 2019

I built my 300blk with accuracy being an absolute priority. It turned out to be a sub 1/2 moa gun. It is possible and for me, to be expected. As others have said, don't build cheap and learn the various methods required for building an accurate AR 15. You'll end up with a pile of them lol.

Park ranger · May 3, 2019

Why get caught up in sub MOA in a blackout? It's a 200 yard gun, realistically. 1 moa is fine. Plus, that probably off a bench? Shoot it offhand at 100 and see that gun go to a 10 MOA gun.

outrider58 · May 3, 2019

Park ranger said:
Why get caught up in sub MOA in a blackout? It's a 200 yard gun, realistically. 1 moa is fine. Plus, that probably off a bench? Shoot it offhand at 100 and see that gun go to a 10 MOA gun.

I'm not caught up on anything other than building an accurate gun. My point was, have higher expectations. Got a problem with that? I was just trying to tell WildWeasel that he can have higher expectations out of a 300 AAC. It really is a short distance round. Why not take it to its its fullest capability?

FWIW, the round was designed to kill people at very close range. It is, as I previously stated, a niche round.

ETA Sorry. I was having a crappy day which end with my boss dropping a fork from our forklift on my bad foot.
:beer:

DaemonAssassin · May 3, 2019

Park ranger said:
Why get caught up in sub MOA in a blackout? It's a 200 yard gun, realistically. 1 moa is fine. Plus, that probably off a bench? Shoot it offhand at 100 and see that gun go to a 10 MOA gun.

Who took away your cup of coffee and replaced it with Sanka?

It isn't a 200 yards gun, it can actually be a 400-500 yard gun, if built properly. The bullet has the same energy at 500 yards, that a 45ACP has at the muzzle of a 1911. You just have to know how to utilize the platform to get those kinds of legs on it. But then again, I did all of the ballistic research to know all of that, because I reload and need that information, should I ever have to take a shot beyond 100 yards.

calicojack · May 4, 2019

smokey0118 said:
https://www.google.com/url?sa=t&sou...FjAAegQIAhAB&usg=AOvVaw2KvaaZ923PEYqR62ezc0nq
Here's a fun source of info on 300 blk

One take away from that web site;

"300 BLK from a 9 inch barrel has the same energy at the muzzle as a 14.5 inch barrel M4, and about 5% more energy at 440 meters."

So build a 300 black 9" barrel AR pistol and you basically get M4 performance.

DaemonAssassin · May 4, 2019

calicojack said:
One take away from that web site;

"300 BLK from a 9 inch barrel has the same energy at the muzzle as a 14.5 inch barrel M4, and about 5% more energy at 440 meters."

So build a 300 black 9" barrel AR pistol and you basically get M4 performance.

Pretty much.

Park ranger · May 4, 2019

All I'm saying is the blackout is darn near a 30-30. I've had many of bang flops with a 110 at 2400 fps at 25-40 yards. But nevertheless, it is slow, so it's going to drop and drift A LOT. And I'm my opinion, muzzle energy of a 45ACP isn't much to sing about.

The 45bisnt know as a man stopper because of energy.

DaemonAssassin · May 4, 2019

Park ranger said:
All I'm saying is the blackout is darn near a 30-30. I've had many of bang flops with a 110 at 2400 fps at 25-40 yards. But nevertheless, it is slow, so it's going to drop and drift A LOT. And I'm my opinion, muzzle energy of a 45ACP isn't much to sing about.

The 45bisnt know as a man stopper because of energy.

Simple physics says otherwise.

Is is time to us explain the 3% math equation for physics and measurement, or should we wait 2 weeks for textbooks to come in? We can recite it all from memory, can you?

babalou · May 4, 2019

I saw what DA did there..

300 blk

The #1 community for Gun Owners of the Northeast

Member Benefits:

2A TEACHER

Attachments

Another Hooligan

Active Member

Eats Bacon Raw

Why should we Free BSD?

Why should we Free BSD?

Eats Bacon Raw

Banned

Active Member

Eats Bacon Raw

Active Member

Eats Bacon Raw

Ultimate Member

Eats Bacon Raw

Why should we Free BSD?

American Sporting Rifle

Why should we Free BSD?

Ultimate Member

Why should we Free BSD?

Ultimate Member

Users who are viewing this thread

Log in

Forum statistics