6.5x55 or 260 in a 20" Barrel

[ZuluMike]

I have a #6 Pac-Nor Fluted 1-8" twist 6.5mm barrel that will finish at 20", and both a long and a short M70 push feed action.
I can't decide if I should build a 6.5x55 on the long action or a 260 on the short. Primary use would be deer hunting from box blinds. I'm hoping to run140gr Hornady SST's @ 2700fps.
Anyone have any suggestions on which to choose or any other ideas.

ZM

 

[Mystic Precision]

Choose the one you can get components and dies for easiest.

A few ounces and a 1/2" difference is what separates the two. On game performance will be the same.

Jerry

 

[Obtunded]

Check to make sure your bolt face will work with a 6.5X55 case. The base is slightly larger than a standard bolt face. Most bolts are "loose" enough, but some aren't. That may end the debate.

 

[shotgunjoe]

How about the .260 in the long action,this allows the bullet to be seated out enough that it won't crowd the powder capacity.

 

[ZuluMike]

I've decided to go with the 6.5x55 in the long action, I think it will be easier to make run at 2700fps in the short barrel than the 260.

 

[Obtunded]

Can't go wrong with the Swede!

 

[.330Dakota]