6mm ARC to 243AI

[Knuckles_Malone]

How feasible would it be to ream out a chamber from a 6mm ARC to a 243AI? I'm looking at 22" barreled actions and the 6mm ARC has the twist rate that I am looking for, which is 1 in 7.5". There are also 243 barreled actions (the easier reaming option), but they are 1 in 10", which is not desirable for me. This rifle build is intended for hunting primarily.

 

[Weaver93]

The bolt face is different between the two.

 

[1017Adams]

McGowan build barrels custom & at good prices. Many manufacturers build to suit.

 

[Knuckles_Malone]

The bolt face is different between the two.

Yes, I was afraid of that, being the 6mm ARC is .441 and the 243 is .471

 

[Mason Blackmon]

Yes, I was afraid of that, being the 6mm ARC is .441 and the 243 is .471

But if you used the savage you could just swap the bolt face
I have the savage 110 18" fluted threaded barrel

 

[ducky]

I'm looking at 22" barreled actions and the 6mm ARC has the twist rate that I am looking for, which is 1 in 7.5". There are also 243 barreled actions

Are they both using the same length action? Usually the ARC cartridges are put in mini actions because they're made to fit AR mags.

 

[1017Adams]

Short action let's heavy bullets be seated out further towards rifling. The 6.5-284 norma is a short action & lots of long actions being used.

 

[Dmagna]

How feasible would it be to ream out a chamber from a 6mm ARC to a 243AI? I'm looking at 22" barreled actions and the 6mm ARC has the twist rate that I am looking for, which is 1 in 7.5". There are also 243 barreled actions (the easier reaming option), but they are 1 in 10", which is not desirable for me. This rifle build is intended for hunting primarily.

Weatherby 307 has a 1-7.5 twist 243

 

[1017Adams]

jjmp has a .243 thats a 1in8 or 7.5 , he has quite a few barrels