.264 lbc

[6.8 KLR]

This is my first 6.5 MM build. Built for hunting in the High Desert area of Southern California, namely in and around the San Bernardino National Forest
Black hole Weaponry .264 LBC 18" Barrel
Aero Precision Upper and Lower
Leupold 3X9X40 Scope
LaRue LT-104 Mount
KNS Anti-Rotation Pins
JT Machine Muzzle Device
Magpul CTR Stock
Magpul MOE Grip
Troy TRX Extreme 15" Free Floating Handguard
Troy QD Sling Swivels
VTAC 2 Point Sling

[melensdad]

Looks awesome

[LRRPF52]

VERY NICE!!!!

[Whelenon]

Very nice, that's a great way to join the Horde, welcome.

[taggor]

Very nice! I like those Troy FF handgards. Welcome to the boards!

[ricsmall]

looks great and nice shooter! welcome.

[usmc1371]

nice

[6.8 KLR]

Thanks Alot you'all,
I have been getting sme great reloading info on this board, especially data using many of the new powders being used in this cartridge. I have been tring to find a good long range round for the AR-15 platform but nothing has really been suitable ,including the 6.8 SPC, for the type of hunting that I do here.
So far the .264 bullet with its higher B.C. and the Grendel case has proved to be Very accurate and at 2900 fps, chronographed, has been a Flat Shooter............Mike....

[melensdad]

Thanks Alot you'all,
I have been getting sme great reloading info on this board, especially data using many of the new powders being used in this cartridge. I have been tring to find a good long range round for the AR-15 platform but nothing has really been suitable ,including the 6.8 SPC, for the type of hunting that I do here.
So far the .264 bullet with its higher B.C. and the Grendel case has proved to be Very accurate and at 2900 fps, chronographed, has been a Flat Shooter............Mike....

I'm surprised you would even consider the 6.8SPC for any sort of long range shooting. It is a good round in the same way that the old Win 30-30 is a good round. But nobody should confuse it with a long range round.

[6.8 KLR]

I'm surprised you would even consider the 6.8SPC for any sort of long range shooting. It is a good round in the same way that the old Win 30-30 is a good round. But nobody should confuse it with a long range round.

Thanks for the great Info. Are you a Deer hunter ? If so what is the load you hunt with ? I am new to this cartridge and do not have any hunting experiance with it yet. This upcoming season will be my first with the 6.5......Last fall I missed a GIANT Buck with the 6.8, that deer was a little over 300 M away. Went back a week later and killed a lesser buck with my .25-06. Gonna hunt'em this fall with the 6.5......... Can't hardly stand the wait.....Season opens here the first Sat. in Oct........

[melensdad]

Thanks for the great Info. Are you a Deer hunter ? If so what is the load you hunt with ? I am new to this cartridge and do not have any hunting experiance with it yet. This upcoming season will be my first with the 6.5......Last fall I missed a GIANT Buck with the 6.8, that deer was a little over 300 M away. Went back a week later and killed a lesser buck with my .25-06. Gonna hunt'em this fall with the 6.5......... Can't hardly stand the wait.....Season opens here the first Sat. in Oct........

No I don't hunt deer, but I grow them for the rest of you. We have them in the back field. Have to shoo them away from the shooting range when they are out feeding in the afternoons. My daughter wants to hunt them this year. I let some friends hunt my property.

I'm surprised you took a shot at a deer at 300M with the 6.8SPC. That round drops below 1000 ft lbs of energy at only 225 yards with factory loads. The 6.5 Grendel maintains 1000 ft lbs of energy out to about 400 yards.

I plan to be hunting hogs this coming spring with 2 of my 6.5 Grendels and 1 458 Socom.

[Brag]

I'm surprised you took a shot at a deer at 300M with the 6.8SPC. That round drops below 1000 ft lbs of energy at only 225 yards with factory loads. The 6.5 Grendel maintains 1000 ft lbs of energy out to about 400 yards.

In the middle ground, I think the 6.8 and 6.5G will take a deer down easy to 300 yards.

16 inch ARP 6.8, 110 Accubond 2700 fps, ammo from Wilson Combat. 300 yards 1000 ft/lbs
20 inch ARP 6.8, 110 Accubond 2810 fps, ammo from Wilson Combat. 330 yards 1000 ft/lbs

18 inch ARP 264lbc, 123 Amax 2475 fps, factory Hornady ammo($1 a round, a STEAL) 350 yards 1000 ft/lbs
18 inch ARP 264lbc, 130 Scirocco Handload(yes, not a fair comparison to factory), twice loaded Lapua brass, CFE 233, 2490 fps(WOW) 420 yards 1000 ft/lbs

20 inch 6.8 and the Grendel loads are expanding at 400 yards, to kill a deer, it's the shooter, not the rifle, but it's nice to stack the deck.

At 300 yards, killing deer, Grendel and the 6.8, good medicine.

6.8 KLR, what a user name, they both are a jack of all trades!!!!!!!!! I've put many miles on a 650 KLR, now I just change the oil often on a 525 EXC, lol.


Some good factory 6.8 ammo is out there, the history of the 6.8 with it's different spec's does confuse many(and me!!), but just as 6.5G guys research what components to build a rifle, 6.8 guys have to do it too. Hats off to AA for really developing many GREAT factory loads and avoiding some confusion. I'm glad I have them both, I rig up the 6.8 more on the hunting lines(trigger, scope, light weight, etc.), and a more target rifle with the 264lbs, but the lines are very blurry, lol.

[melensdad]

Not sure where you are getting your 6.8 SPC energy and velocity numbers, but the Wilson Combat website shows a muzzle velocity of only 2550 fps with the 110 grain Nosler Accubond while you claim up to 2810 fps. That is a SIGNIFICANT difference, every will be correspondingly lower.
LINK => http://shopwilsoncombat.com/Ammo-68-...ductinfo/NW164

Using an on-line Ballistic Calculator and plugging in 2550 fps, 110 grain bullet, BC of 0.37 and the energy drops below 1000 ft-lbs of energy at just over 200 yards, which confirms what I previous had written.

So while you claim:

20 inch ARP 6.8, 110 Accubond 2810 fps, ammo from Wilson Combat. 330 yards 1000 ft/lbs

The actual ballistics for that round suggest that roughly 225 yards = 1000 ft-lbs, that is 105 yards shorter than your data.
Link to on-line Ballistic Calculator => http://www.handloads.com/calc/

While the MILITARY considers 500 ft lbs of energy to be the minimum for shooting a man, many hunters consider the ethical minimum for a clean kill on an animal to be 1000 ft-lbs. While not definitive, here is a cartridge designer who suggests that ethical hunting requires 1500 fl-lbs of energy AND at least 2500 fts of velocity: LINK => http://www.lazzeroni.com/ct_lrs.htm Now if we applied his standards to the 6.8SPC then it would not be ethical to hunt with that round past 50 yards, so it seems to go back to the far more common 1000 ft-lbs of energy standard.

Consequently the effective ethical hunting range of the 6.8 SPC is roughly 225 yards while the ethical hunting range for the 6.5 Grendel is roughly 400 yards . . . assuming a hunter can make those shots.


From the website of Silver State Armory, here are their velocity claims:

[Brag]

Ok, OK, slight correction

http://shopwilsoncombat.com/68-SPC-110-gr-Hornady-BTHP-2700-FPS-16-Barrel-20_Box/productinfo/A68-110-BTHP/

Not the 110 gr Accupoint, 110 Hornady BTHP.

Also note the the 20 inch barrel shoots faster than the 16 inch barrel, works the same for the 6.5G.

Handloads in my 20 inch 6.8, 95gx TTSX to 3000 fps with AA2200, but the BC isn't as good as the 110gr pills. Look up the BC of the 6.5 130gr Scirroco, I use .540 in my ballistic program, .540 ROCKS

Crunch the Numbers, I think you'll find the 6.8 loads won't bounce off the hide of a deer, if you can kill a deer at 300 yards with the Grendel, the 6.8 can do it too.


What load are you using to 400 yards? What barrel length? I'd need a 24 inch 6.8 barrel(I don't think I'd ever buy one,lol) to get to 3000 fps with the 6.8 with a 110 gr bullet, I like 20 inch tubes, although some day I'd like a 24 inch G.

[melensdad]

Ok, OK, slight correction

http://shopwilsoncombat.com/68-SPC-110-gr-Hornady-BTHP-2700-FPS-16-Barrel-20_Box/productinfo/A68-110-BTHP/

Not the 110 gr Accupoint, 110 Hornady BTHP. . . .

OK that is the "tactical" ammo that requires the newer generation chambers and slower barrel twist can is not safe for use in all 6.8 SPC rifles. But even that only lists 2700 fps in those rifles so chambered/barreled to handle that.

My experience with the 6.8 SPC is owning, and then being totally disappointed with the over-hyped/under performing round, leading to the sale of the upper to someone who bought into the false advertising.

The only way to get the 6.8 SPC to really perform is to load it up to pressures that flatten primers due to excess pressures. The bullets are about as aerodynamic as a 1970's Volvo sedan and while its an excellent short and modest range round, I stand by what I've illustrated several times, that is that beyond about 225 yards, with very rare exception, it simply does not retain enough energy for ethical hunting (at least 1000 ft-lbs of energy).