Bu chopping, I'm assuming that you know you lose the ability to mount the USGI flash eliminator, and thus, you must either use an alternative front sight, or use a scope. The M-14 barrels actually flare wider at the muzzle to a width that allows cutting of the oblique groove indices for the flash hider and adding the castle nut threads.
Strictly speaking, shorter/longer has no effect on accuracy. There are trade-offs. Most of the accuracy influences on an M-14 (outside of barrel quality) occur from the mechanical movements, and the controllability of the rifle. (10" twists contribute to excessive torque...12" are better)
Strictly speaking, shorter/longer has no effect on accuracy. There are trade-offs. Most of the accuracy influences on an M-14 (outside of barrel quality) occur from the mechanical movements, and the controllability of the rifle. (10" twists contribute to excessive torque...12" are better)