Ar15 1000yd caliber?

[m1ajunkie]

Are there any caliber options that function in a regular ar15 that would be solid 1000yd performers? I am aware of 6.5 grendal, but I would like to know if there are other options.

Last week at the range a guy was shooting one of the 6mm catridges that looked like it might fit in an ar mag, but I don't remember the actual name of the caliber.

Any suggestions?

 

[FCS]

Re: Ar15 1000yd caliber?

6 AR, 6ARTurbo - 6.5 Grendel parent cartridge

6 WOA - 6.8 SPC parent cartridge

Possible to get a bolt and barrel extension from AR Performance to do a 6 / 6.5 BR in -15.
http://www.ar15performance.com/
http://www.ar15performance.com/new_products

 

[excaliber]

Re: Ar15 1000yd caliber?

Hunting or just targets? If it`s hunting, go for AR 10 platform.

 

[smallbore]

Re: Ar15 1000yd caliber?

I don't know what your idea of a "solid 1000 yard performer" is or if you are punching paper or game animals but the .223 is fired to 1k yards from the AR15 at the national highpower championships. It is important to note that these riles have a very fast twist and use heavy bullets that won't load in a magazine, and the available energy at extended ranges may be questionable for use on game. Every one that I know uses a dedicated upper for this.

It sounded like you want magazine loadable ammo. I believe if you look at the combination of ballistics, ammunition, and component availiblity, combined with cost and resale value you will see the need to move up to a larger platform such as the AR10, M1A, Garand, or BAR. Any in that selection will give you a lot of choices including some long action rounds. Good luck with your quest.

 

[346ci]

Re: Ar15 1000yd caliber?

6.5BR. H at ARP(mentioned already) builds those also and has barrels in stock. If you don't want to handload, the G/264 might be your best bet. Going to need a 24"+ bbl for 1K.

 

[Unknown]

Re: Ar15 1000yd caliber?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 346ci</div><div class="ubbcode-body">6.5BR. H at ARP(mentioned already) builds those also and has barrels in stock. If you don't want to handload, the G/264 might be your best bet. Going to need a 24"+ bbl for 1K.

</div></div>

The 24 inch barrel will of course give more velocity with less powder and strain on rifle and brass.

I have an Alexander Arms Shilen 19.5 inch barreled Grendel, and using AA2520 powder, 123 Scenar bullets, Lapua cases, CCI450 primers, I get around 2550 FPS out if that setup. With the exbal program and the meteorological and environmental factors I have entered into the exbal program, my bullets don't go transonic until just about 1400 yards.

To be sure, there isn't enough remaining velocity at that distance to give sufficient power for shooting much more than a rabbit or coyote. I don't think it would be ethical to use that combination on deer or antelope sized game after 400-600 yards even if you could hit it. I just think that game animals deserve more respect than to be hit with a bullet that has so little energy in it that the animal would suffer a lingering death.

But with paper targets or steel targets, that wouldn't matter

 

[m1ajunkie]

Re: Ar15 1000yd caliber?

Didn't think to add this in my original post, but I'm looking at steel targets only. I have a .308 MWS for use when I get the urge to hunt.

What I was thinking when asking this question is that my current .223 upper shooting 77gr smk's is nice out to about 650-700yds. After that, I shoot the mws.

However, the caliber I saw at the range with the 6mm bullet was doing very well at 700yds, and the owner claimed it would shoot to 1000yds no problem even in moderate winds. I'm just looking for other options to shoot since I handload and can take advantage of other calibers with better performance.

ETA: I would like this to feed from a magazine.

 

[FCS]

Re: Ar15 1000yd caliber?

6 AR/6ARTurbo would fit bill nicely.

Will need 6.5 Grendel magazines but 6 AR/ARTurbo dies and uppers are available http://www.6mmar.com/

I'd be tempted to do a 6/6.5 BR but gut feeling is the 6 AR/ARTurbo will feed better and you can get 10/15/24 rd magazines that'll run outta the box.

 

[holdoff]

Re: Ar15 1000yd caliber?

Don't forget the 6mm RAT and 6mm FAT RAT. Esentially, the same as Robert Whitley's 6AR/6AR Turbo. The benefit is that you can obtain a barrel/bolt and build your own with the RAT. The 6AR/Turbo setup has to be bought as a complete upper.

For 1000yds you will need the long barrels to maximize velocity. The highpower guys run 28in commonly.

Shooting buddy has a 6AR with a 19.5in barrel. Duplicates .308 Win 175/178gr loads. That is with 105 Bergers at mag length at around 2600fps if memory serves. Alot of velocity tradeoff with a shorter barrel.

 

[johnsta]

Re: Ar15 1000yd caliber?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: m1ajunkie</div><div class="ubbcode-body">Are there any caliber options that function in a regular ar15 that would be solid 1000yd performers? I am aware of 6.5 grendal, but I would like to know if there are other options.

Last week at the range a guy was shooting one of the 6mm catridges that looked like it might fit in an ar mag, but I don't remember the actual name of the caliber.

Any suggestions? </div></div>

6.5 Creedmoor or 260 Remington has gotten very good reviews. From what I have read, 6.5 creedmoor performs very well in the AR.

 

[Snape315]

Re: Ar15 1000yd caliber?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: johnsta</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: m1ajunkie</div><div class="ubbcode-body">Are there any caliber options that function in a regular ar15 that would be solid 1000yd performers? I am aware of 6.5 grendal, but I would like to know if there are other options.

Last week at the range a guy was shooting one of the 6mm catridges that looked like it might fit in an ar mag, but I don't remember the actual name of the caliber.

Any suggestions? </div></div>

6.5 Creedmoor or 260 Remington has gotten very good reviews. From what I have read, 6.5 creedmoor performs very well in the AR. </div></div>

Both the 6.5 Creedmore and 260 Remington are for the AR10 platform, not the AR15 (which is what the OP wants).

 

[CaliShooter]

Re: Ar15 1000yd caliber?

.260

 

[sititunga]

Re: Ar15 1000yd caliber?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: McCourt Munitions LLC</div><div class="ubbcode-body">6 AR/6ARTurbo would fit bill nicely.

Will need 6.5 Grendel magazines but 6 AR/ARTurbo dies and uppers are available http://www.6mmar.com/

I'd be tempted to do a 6/6.5 BR but gut feeling is the 6 AR/ARTurbo will feed better and you can get 10/15/24 rd magazines that'll run outta the box. </div></div>

AR15 Performance have been chambering the 6mm BRX in the AR15. This uses a proprietary bolt and barrel extension however like the 6mm FAT Rat and 6mm AR Turbo 40 you have to fireform the brass. It's a shame none of the manufacturers are offering ready to go brass for the Turbo. It's a sweet round. I don't think you have to run a particularly long tube for the 40. I think the max velocity is achieved at the 24 inch mark like the Grendel. Given the BC of some of the 105 - 108 class bullets you could easily run a 22 inch barrel and still be supersonic at 1200 yds with the Turbo. The BRX is meant to be a real screecher, AR15 Performance have claimed 3000 fps from a 22 inch barrel using 105 gr Bergers'.

 

[ARP]

Re: Ar15 1000yd caliber?

The 6mm SPC or 6x6.8 is a bit too long to be able to get the long bullets loaded right for long range shooting. The 6mm RAT or FAT RAT or the 6mm AR Turbo 40 Improved is the way to go with the AR15. I have had both and still have the 6mm SPC as my number one coyote killer.

I would go with a 27 - 28 inch tube for the 6mm RAT. Mine was a 27.5

 

[johnsta]

Re: Ar15 1000yd caliber?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Snape315</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: johnsta</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: m1ajunkie</div><div class="ubbcode-body">Are there any caliber options that function in a regular ar15 that would be solid 1000yd performers? I am aware of 6.5 grendal, but I would like to know if there are other options.

Last week at the range a guy was shooting one of the 6mm catridges that looked like it might fit in an ar mag, but I don't remember the actual name of the caliber.

Any suggestions? </div></div>

6.5 Creedmoor or 260 Remington has gotten very good reviews. From what I have read, 6.5 creedmoor performs very well in the AR. </div></div>

Both the 6.5 Creedmore and 260 Remington are for the AR10 platform, not the AR15 (which is what the OP wants).

</div></div>

Oops my bad.