The yanks have some silly rules about rifles. Sub (I think) 16" is not allowed without paperwork. I may have got this wrong, because they love their AR15s which where designed around a 14" barrel, including gas ports, to shoot .223 or the Nato equivalent.
Whereas here, for .22 LR, 14" is about optimum, and for those who want to go shorter, 12" is the minimum.
A 16" .308 gives up very little to a much longer one. Hence things like the RPA Woodland Stalker,. Though in .243 it doesn't work, legally.
I've shot an RPA "stubby" .308 16" folding stock job out to 900 metres and it performed perfectly. Wish I could afford one.
We like our moderators (yanks can't have them without paperwork, taxes etc.), depending on design they add back a few inches.
Why carry a long rifle to no purpose ? Unless you think that a "magnum cartridge" is necessary to shoot anything hereabouts.