Myself, it would be the 6/280AI, 1 in 8 twist...

and shooting those 115 grain Bergers or the DTAC bullets...

I run them at 3250 fps out of a 6mm Rem with fast twist, out of a long action model 700... and they are real flat shooting...

so the increased powder capacity. ought to zing them out there even better...

barrel life? what the hell, ya only live once..

"Minus the killings, Washington has one of the lowest crime rates in the Country" Marion Barry, Mayor of Wash DC

“Owning guns is not a right. If it were a right, it would be in the Constitution.” ~Alexandria Ocasio Cortez