Empty AR15 receiver...What upper should I buy or build for a 300 yard deer AR?

stirner

Well-Known Member
Joined
Mar 10, 2012
Messages
97
Location
Helena, Mt
I guess I'm too late for the Bluejay, but for the rest of you following this thread, go to Mad Dog Weapons Systems. He has a host of higher velocity ARs, with cases that are not that difficult to form. I have the 7mm Valkyrie, consistently shooting groups less than MOA. My current hunting load is a 130 gr Speer at 2900 fps. It shoots 1.5" at 200 yds. It may be replaced by the 136 gr Hammer @2732 fps and a 2.05" group @ 200 yds. The 140 gr NBT does a 1.28" group @2680 fps.
 

Maol

Well-Known Member
Joined
Oct 14, 2016
Messages
70
Location
Wyoming
If you go 700 chambered in it look at the turbo 40. Much better imo
In a boltie there are better 6mms than the ARC. Dont know a thing about the Turbo 40. But I agree with with Eric_F. For a factory GP 6mm rifle probably a 6BR. For factory 6mm hunting rifle probably a 6mm Creedmoor. But they take a third more powder to get 200-300 fps more than 6BR, and running over 3000 FPS really harshes your barrel life. Maybe a 6BRA for barrel life and rolling your own. Like the BR it has less recoil, not that the Creedmoor is horrible.

I was pretty excited at first by the ARC for Varmints and Speed Goats. Thought it might be OK even for Hogs and Deer at reasonable ranges. We don't have Hogs, and Mulies can run big so that doesn't matter much to us. Investigating the ARC cooled me off to them eventually. The boltheads don't have enough meat and mags can be edgy feed wise. We went with ARP's TAC 6 (6.8 SPC Wildcat) in a 22" (for velocity) with PRI mags for a 6mm AR instead. It scratched the 6mm itch pretty good.

We don't have a 6mm Bolt Rifle. Don't really see the need for us. The TAC 6 covers that slot pretty well i guess. Besides the Wyoming wind really pushes the 6mms, and for hunting that matters a lot so you really have to push them. That 6.8 Western is sure getting my attention though. A 270 in a short action. Hmm, a XBolt or a M70, now that is a whole new thread...
 

snox801

Well-Known Member
Joined
Sep 19, 2012
Messages
3,487
Location
Spring Lake Michigan
At that point, why not 6 BR and save yourself a lot of trouble fireforming and getting an unusual bolt face? I've got a 6.5 Grendel and a 6 BRA, they're really similarly sized.
I think you are correct better if ones exist for a bolt like a dasher. But I never get why the argument of fireforming is a hassle. I’ve never had a rifle that I can take new brass and have it the same capacity after firing. So virgin brass gets you close but I wouldn’t do my finale load on it if looking for perfection and maximum FPS. If you don’t care about that then standard ammo shoots very good out of the chamber while fireforming. So to me the first firing is always getting you close enough but the second gets you were you want to be so fireform is not really a hassle. I can shoot factory rounds with enough accuracy to get by and after that it’s extra FPS.
 

snox801

Well-Known Member
Joined
Sep 19, 2012
Messages
3,487
Location
Spring Lake Michigan
Turbo 40 is 6.5 grendel brass necked down and improved. It’s about as good as you get in an ar chassis. And yes I have experience with 6.8 based stuff and the Grendel wins hands down on ease of components everyday.
 

snox801

Well-Known Member
Joined
Sep 19, 2012
Messages
3,487
Location
Spring Lake Michigan
Not to mention the 6.8 really limits you to shorter bullets so take any high bc and throw it out the window cause the only way to run those is seat deep and it eats up powder capacity and that defeats the purpose.
 

Sid Post

Well-Known Member
Joined
Jul 27, 2007
Messages
252
Location
Texas, USA
I guess I'm too late for the Bluejay, but for the rest of you following this thread, go to Mad Dog Weapons Systems. He has a host of higher velocity ARs, with cases that are not that difficult to form. I have the 7mm Valkyrie, consistently shooting groups less than MOA. My current hunting load is a 130 gr Speer at 2900 fps. It shoots 1.5" at 200 yds. It may be replaced by the 136 gr Hammer @2732 fps and a 2.05" group @ 200 yds. The 140 gr NBT does a 1.28" group @2680 fps.
Looking forward to a 257 Ocelot myself. 👍
 

snox801

Well-Known Member
Joined
Sep 19, 2012
Messages
3,487
Location
Spring Lake Michigan
I know you guys like the .25 but if using the .223 case you will also be limited In bullet length. With power bc can’t see anywhere the 25 does better than the 6mm variant of that round except barrel life. Which be honest the 6mm has a ton of life off the .223 case. Heck you must be careful with the 6mm. I say this because it has a similar case length to the 6.8 based variation. Both are to long. That’s what makes the Grendel so good.
The new boy thing the .25 oce does better is ease of brass.
 

Primary

LRH Assistant
Here are some related products that LRH members are talking about. Clicking on a product will take you to LRH’s partner, Primary, where you can find links to LRH discussions about these products.

 
 

Recent Posts

Top