Already have a 5.56 AR. I am getting an ar15 stripped lower and cant decide on what caliber to make it. I have been thinking 300 blackout, 50 beowulf or 458 socom. Want something different and in no rush to build it. Ammo and uppers on the second 2 are limited and more money but i am still interested. Later on i will do an ar-10 build and another 5.56

6.8 SPC

5.7x28

9mm

5.45x39

.308/7.62x51

To be quite honest, I prefer 7.62x40 Wilson Tactical. The 300 Blackout is a nice round, but it drops quickly, and in a state where can ownership is near impossible, is prevented from reaching its full potential. 7.62 WT is much like a 300 blackout except it moves a much higher velocities. If you reload, I would go with that, If you dont 300 is the way to go.

6.8 SPC

5.7x28

9mm

5.45x39

.308/7.62x51

 

The only one I might consider is 6.8. Will look into that

 

 

To be quite honest, I prefer 7.62x40 Wilson Tactical. The 300 Blackout is a nice round, but it drops quickly, and in a state where can ownership is near impossible, is prevented from reaching its full potential. 7.62 WT is much like a 300 blackout except it moves a much higher velocities. If you reload, I would go with that, If you dont 300 is the way to go.

 

I do not reload

The only one I might consider is 6.8.

 

No 5.7x28? Sighewa has one - he loves it.

6.5 Grendel (I want one of these. Its my dream build)

6.8 SPC

7.62x39

7.62x40 WT

7.62x51

.300 Blackout

.458 Socom

.50 Beowulf (Another dream build)

9mm

.22

 

I'd do a 6.5 or 6.8 build. Both calibers aren't really expensive, and they both have good ballistics.

 

If you want expensive to shoot, I'd go .50 Beowulf or .458 Socom. Both are nasty looking rounds.

.22LR? Hey, that 300 Blackout is expensive...

You think .300 Blk is expensive? A 20round box of .50 Beowulf Copper split HP is 50 dollars. But thats the outlier. Most of it is either 27 to 35 dollars depending on the load.

Joe, what would you like to with the gun? Deciding on whether it will be a target shooter, plinker, defence, competition or special purpose gun will help narrow down the calibers heavily. Remember that, If you build a pistol caliber, you can rock it at the steel matches!

It will mainly be a range/defense gun. No pistol ar for now. I have a few pistol caliber carbines

Defense = .458

Reach out and touch someone = .270

 

JMHO

I think for now I am leaning towards 6.5 Grendel. Later on when more options are available I will do a Beowulf build

Fish, I'm in the same boat as you, except I'm considering a pistol. As for me I've been tossing between the 300AAC, Grendel and 7.62X39. The thing that holds me back from doing it in the Russkie caliber is that I will only use a lower that is dedicated to 7.62x39. As far as I know MGI is the only company that makes such lowers and they are super pricey.

Fish, I'm in the same boat as you, except I'm considering a pistol. As for me I've been tossing between the 300AAC, Grendel and 7.62X39. The thing that holds me back from doing it in the Russkie caliber is that I will only use a lower that is dedicated to 7.62x39. As far as I know MGI is the only company that makes such lowers and they are super pricey.

 

AFAIK the pistol cant be built under the 50oz weight requirement without using the carbon series of receivers.

Doesn't apply to me anymore bud!

AFAIK the pistol cant be built under the 50oz weight requirement without using the carbon series of receivers.

Doesn't apply to me anymore bud!

 

DOH. Congrats though. If you are over there apply for your stamp and go for the real deal SBR. Way more useful than a pistol.

It all starts will a pistol first and when the approval comes through..SBR!!!

 

DOH. Congrats though. If you are over there apply for your stamp and go for the real deal SBR. Way more useful than a pistol.