Welcome to Southwest Firearms
Join our community, sign up for free today!
Sign Up

Which caliber for next AR-15 build??

Which caliber for next AR-15 build??

  • .300 Blackout

    Votes: 3 50.0%
  • 6.5 Grendel

    Votes: 2 33.3%
  • 6.8 Remington SPC

    Votes: 0 0.0%
  • 7.62 x 39

    Votes: 0 0.0%
  • .458 Socom

    Votes: 0 0.0%
  • .50 Beowulf

    Votes: 1 16.7%

  • Total voters
    6
Messages
207
Reactions
252
The build I just finished and the one that I am working on now both have .223 Wylde barrels. I am looking for input on which caliber to use for my next build.
This will be on a .223/5.56 lower, so I think there are a few choices. Let me know which caliber you like and why. Also, please make a selection in the poll above.
Thanks.
 
Messages
690
Reactions
1,063
I voted 7.62x39
I like the availability of cheap ammo, and I don’t shoot this caliber much past 200 yds. Of course, to shoot cheaply you have to run steel case ammo. Mine will be receiving a thermal NV setup instead of the current red dot. FMJ, Soft tip, or Hollow Point ammo is all the same price too.

Mine is built from Palmetto parts and has been flawless.
 
Messages
427
Reactions
829
+1 on the .300 B.O. suppressed! I did mine as an SBR, so I didn't have to worry about unjust laws!

Next one was going to be a .458 but got a smoking deal on a PSA .308, so now I don't know what i'm gonna build!
might twist together a .243 top end Coyote wacker for the Wife!
 
OP
1971Chevelle
Messages
207
Reactions
252
Since this will be a rifle, I think I am going to go with either the 6.5 Grendel or the 6.8 SPC. I want something with a little more punch than a 5.56. Eventually I will build an AR-10 (off of an 80% lower), but that won't be anytime soon.
 
Messages
66
Reactions
60
6.5 Grendel is about the same as you already have in the 6.8 so that does not make sense. I would lean suggesting to go with your plan to build a nice 20" 5.56. You could also consider a 300 Blackout, but not a caliber that I have or wish to have.
 
Messages
111
Reactions
166
Wouldn't mind a grendel but if I did that I think I would build a rifle so I can reach even farther :D
I have the "reach even farther" covered with Styers in 308, 300 Win Mag, and .50 M-2. I wanted something a bit smaller to carry that hit harder than 5.56 and with the "poison" bullet design (from the 5.45x39) loaded in 6.5 Grendel by the russians, it was a sure thing.
 

11Charlie

Messages
1,261
Reactions
1,832
I have the "reach even farther" covered with Styers in 308, 300 Win Mag, and .50 M-2. I wanted something a bit smaller to carry that hit harder than 5.56 and with the "poison" bullet design (from the 5.45x39) loaded in 6.5 Grendel by the russians, it was a sure thing.
Nice!! That makes perfect sense to me. But then with guns it doesn't take much to persuade me! ;)
 
Messages
66
Reactions
60
My wife and I both have .300 blacks and they are good deer getters, two years out, 4 deer in the freezer and I reload so it is no problem for us. Light recoil, nice shooting guns, but where we hunt we are rarely presented with a shot over 150 yards.

At lot of people hooting and hollering about the .224 valkyrie right now, but I have not had time to really check it out.
 
Messages
922
Reactions
815
There are so many good deals on 6.5mm Croodmeer uppers, I'm figgerin' maybe one of those. Pair it with a .308 lower, and you're there!
 

UPCOMING EVENTS

Crossroads of the West Gun Show
Arizona State Fairgrounds
1826 W McDowell Rd, Phoenix, AZ 85007, USA
Crossroads of the West Gun Show
Reno Convention Center
4590 S Virginia St, Reno, NV 89502, USA
Crossroads of the West Gun Show
The Pavilions
475 S Grand Central Pkwy, Las Vegas, NV 89106, USA

NEW CLASSIFIED ADS

LATEST REVIEWS

  • Murphy's Guns and Gunsmithing
    5.00 star(s)
    When I go in I usually will watch and listen to employees before I choose which one to talk to...
    • Gunsandgars
  • Murphy's Guns and Gunsmithing
    4.00 star(s)
    I have purchased new and used from them. I was lucky a while back and they had a Armalite AR10A...
    • Belevolk
  • Bruno Shooter Supply
    5.00 star(s)
    Not really a gun store per se, although they do have a couple rifles there for sale, but Bruno...
    • wildcat455
  • Ammo AZ
    5.00 star(s)
    Great place,awesome staff and customer service. Have personally done business with them numerous...
    • Tecj68
  • AJI Sporting Goods
    5.00 star(s)
    I have purchased a couple of firearms from AJI. They have a good balance of tactical and other...
    • 1971Chevelle