Can you change out the barrel on a 6.8 SPC and run 5.56

[Don-n-Texas]

Can you change out the barrel on a 6.8 SPC and run 5.56. Is there any problems I’m going to run into?

My brother bought a DD thinking the military would adopt this cartridge. They didn’t and now with all that’s going on We think converting to 5.56 is a good option.

 

[Crews]

You will also need to change the bolt and get different magazines.

 

[ShootnFool8]

Nothing wrong with that caliber. Just depends on the use.

 

[Don-n-Texas]

Thank you Crews and Shootnfool8

 

[Crews]

Nothing wrong with that caliber. Just depends on the use.

Agreed, seems very un-objective to move away from (or purchase, for that matter) a caliber solely because of what some group of idiots in the military procurement office decided.

6.8 is a fine cartridge.

 

[Don-n-Texas]

Ok was able to buy dies just now so he will keep it.
but your right it is a good cartridge

 

[blackblue]

Keep it and get another upper.

 

[nutation]

There are several common bolt face diameters used by multiple different calibers, e.g. .308, 6.5 Creed, and .45 ACP all use the same size bolt face. This is often due to new cartridges being developed from older ones by necking up or down, changing the shoulder location and angle, etc.

6.8 SPC is the parent cartridge to .224 Valkyrie, so you could convert the upper to that and keep the same bolt.

 

[Slab74]

My 6.8 has put a lot of black tail meat in my freezer.

 

[jwhjwh54]

apparently no one shoots it around here but me, I'm still finding 120Gr sst's on the shelf for $28 a box. I shoot a ton of hogs and deer with it. only used my 556 once this year because I wanted to see how it did and was reminded why I started using the 6.8 in the first place. 6.8 just hits harder.

 

[FrozenMinnesotan]

i love my 6.8.

 

[MuleyTime]

I once shot a guy's 6.8 SPC and was very impressed. It led me to a build that I absolutely love .......my 6mm/6.8 SPC Improved.....(6DTI).

 

[PinesAndProjectiles]

I once shot a guy's 6.8 SPC and was very impressed. It led me to a build that I absolutely love .......my 6mm/6.8 SPC Improved.....(6DTI).

I'll second this. I've got a barrel from Columbia River Arms in 6x6.8 and it's a fun cartridge.