.264 LBC 20" Black Hole Weaponry Barrel

S

SD Handgunner

New member
OK guys I am in the thinking stages of putting together another AR15 Upper Receiver Assembly. Here are the requirements:

Factory Ammo availability is a must, yes I handload but want the option of shooting factory ammo if necessary.

Longest range possibilities in the AR15 Platform with a 20" standard weight barrel for the purposes of mainly Hunting Coyotes but also for taking Whitetail Deer at reasonable range.

Light recoil will be a plus as my grandkids will be shooting this upper receiver assembly also (when I am not shooting it).

As can be seen from the title I am leaning towards a 20" Black Hole Weaponry Barrel in .264 LBC. I am quite sure there are some of you guys that have the exact barrel I am contemplating. Your opinions please.

Now for the questions:

Can Hornady 6.5 Grendel Ammo be safely fired in the .264 LBC Black Hole Weaponry Barrel? Yes I know the brass is basically the same dimensions between the 6.5 Grendel and the .264 LBC but that the differences are in the throating in the individual chambers of the two different rounds.

I see on Black Hole Weaponry's web site they offer either 1 in 8" or 1 in 9" Twist Rates for the .264 LBC. What is the preferred twist rate for say a 123gr. Hornady SST or AMAX?

Lastly what kind of accuracy and velocity are you guys getting that are shooting the Hornady 6.5 Grendel Ammo in your 20" .264 LBC Black Hole Weaponry Barrels.

In closing any and all information will be greatly appreciated. I already have a stripped upper receiver on hand that will be used for this project, and will be building this Upper Receiver Assembly a part at a time as funds permit.

Thanks

Larry
 
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The Hornady and any factory Grendel can be shot safely in the LBC. The difference isca neck that's 0.002 smaller in the LBC and a more standard throat.

Accuracy from the guys shooting factory ammunition is an MOA or better with handloading getting it down to 0.5 MOA for many combinations.

Velocity in the 2450-2500 area with factory ammunition thanks to the polygonal barrel. I always go with fasrer twist given the choice. Realistically you probably would never see the difference in shooting those bullets. My factory duplication loads are shooting extremely well in both twists with the SST.

Greg
 
Thanks for the reply Greg. My granddaughter just took her second deer yesterday with my 16" .223 AR15. I am handloading 65gr. Sierra Gamekings with Varget. Bullet performance at 175 yards was perfect, but we waited a long time for the deer to provide the right shot angle.

Thus thinking about something with a bit more horsepower and reserve my .223 for called coyotes.

Thanks again

Larry
 
I have an AR with an ARP 264 LBC barrel. I have shot Hornady factory ammo and reload with hornady 6.5 grendel dies. I have not had any issues with performance or accuracy. The only downside is I do not shoot the gun anymore.
 
Originally Posted By: SD HandgunnerThanks for the reply Greg. My granddaughter just took her second deer yesterday with my 16" .223 AR15. I am handloading 65gr. Sierra Gamekings with Varget. Bullet performance at 175 yards was perfect, but we waited a long time for the deer to provide the right shot angle.

Thus thinking about something with a bit more horsepower and reserve my .223 for called coyotes.

Thanks again

Larry

Any time Larry. The LBC family and its identical but different 6.8 family are my passion and addiction, there is a difference, and I enjoy passing the stuff along. The nice thing is they are available with a little internet time and plastic. No waiting or wondering if they are vaporware.

Greg
 
I have the exact barrel your looking at in a 1-9" twist and it loves 123 g. Amax. It shot really well with 8208 and getting about 2600 FPS. I tried CFE223 and its about 70-100 fps slower at the muzzle depending on ambient temps, but my SD on muzzle velocity is in the single digits and its even more accurate at range so thats the load I went with.
 
I have had 2 of these barrels and both shot sub moa easily. I am putting together a 18" .264 LBC with one of there barrels now and expect nothing but the same. Good product!
 
I have a 20" on mine, I mainly hand load but shoots factory ammo fine as well, sub moa is no problem, run 95gr vmax for coyotes and 123amax, 100gr ttsx, or 105gr interbonds for deer, soon to be trying some 95-100gr gmx's
 
I built this one a few years back. I started with a Sun Devil solid billet upper and lower. Used a Geissele SSA-E trigger and a 24" Black Hole Weaponry barrel. She is my baby, but I still call her 'The Pig'. Haven't worked the load I really like but I am using 8208 XBR with 123 gr A-Max and getting .300 or less. I do like the barrel and wouldn't mind getting one for one of my Remington 700's
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Guys I know this thread is older, but starting on my BHW 18" 264 LBC. My question is have anyone experienced problems with mags or breaking bolts? I have a new in box Radical Firearms BCG and bolt in 7.62x39. Just wondering if any issues encountered and what Bolts you guys using. I want reliability and avoid any bolt breakage issues. Thanks
 
ASC magazines for all of mine run 100%. No bolt breakage in thousands of rounds. I have used DPMS, MODEL1, R GUNS and Olympic. Load it sanely and it is not an issue.

Greg
 
Good to hear. I was over on 6.5grendel forums, and man those guys explained how bad bolt breakage with the 7.62x39 bolt was, or how it was ripping up cases etc. BUT the more time I've spent reading the archived post, I now realize that most of that was possibly die hard SAAMI spec Grendel shooters being partial to the SAAMI spec stuff. Basically it's more of a LBC vs Grendel debate or propaganda campaign. Glad to hear no problems for most on here! Thanks
 
Originally Posted By: trooperjdGood to hear. I was over on 6.5grendel forums, and man those guys explained how bad bolt breakage with the 7.62x39 bolt was, or how it was ripping up cases etc. BUT the more time I've spent reading the archived post, I now realize that most of that was possibly die hard SAAMI spec Grendel shooters being partial to the SAAMI spec stuff. Basically it's more of a LBC vs Grendel debate or propaganda campaign. Glad to hear no problems for most on here! Thanks

Back in the Old Days, when I had blonde hair, they were opening up 223's to 7.62 and the bolt quality was poor. Now there are purpose build quality steel, 9310 not Carpenter, that has made bolt breakage a very low issue.

Lots of harping about extraction problems yet I have never had that issue. My extractors have NEVER failed to extract a case and I run over dozen of these LBC chamberings. They also talk about extractors breaking yet I have not experienced this and FLEET testing be damned. Even if one does break so be it. I've broken one in a 223 yet no one seems to claim the sky is falling when that happens or do they?

I believe the shorter depth allows for stronge side lugs and I also believe that since the chamber is 0.010 deeper that gives that much more case support on the web area. Never a bad thing. The LBC does not have the compound throat of the G. yet I have never had, nor has Ritch apparently, had problems shooting different bullets very will. If a throat change would make mine better I would have nothing but Grendels,I do own a G. BTW, so my assessment it's a tempest in a tea pot and has about as much concern to me as what color a baseball team wears on out of town trips.

Greg
 
Trooper I only have two, with probably 1200 rnds between them with no bolt or extractor problems. My 264 is 18", 1-9 and I will say factory ammo is inconsistent in it. Probably averaging 1.25 moa. Handloads with 123's are better, but it really shines with 100 gr amax. The throat on mine is very long; 123 amax would need a coal of about 2.38" to reach lands iirc. I would go 1-8 twist given the chance to do it over.
 
Oh, also wanted to say the bcg on my 243lbc is a Radical, and was rough enough inside that it wouldn't run. I split it up, putting the bolt in a known carrier, and used the radical carrier in my slightly overgassed 204, and both work great now.

I would like to get a spare 7.62x39 extractor. Greg, where's a good source for those? You don't see them every day.
 
Originally Posted By: 204 AROh, also wanted to say the bcg on my 243lbc is a Radical, and was rough enough inside that it wouldn't run. I split it up, putting the bolt in a known carrier, and used the radical carrier in my slightly overgassed 204, and both work great now.

I would like to get a spare 7.62x39 extractor. Greg, where's a good source for those? You don't see them every day.

I bought a couple from MODEL 1 several months ago for some stripped bolts. They've worked fine do far. I haven't broken one but for giggles I just did a quick search and found a couple sources in stock.

Hard to tell who makes what in the bolt parts world. Everyone and their dog in the commercial world ud trying to source them for their sales.

Greg

Here's one...http://www.shop.ar15hardware.com/main.sc
 


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