My idea of a truck gun is a gun that I don't mind if it gets a scratch or two. Decades ago, a Winchester 94 30-30 often filled that role. Today, we have even better options IMO.
CZ 527.
Howa Mini
Ruger American Ranch
That Ranch is only 36" long! 223, 6.5 Grendel, 300 BO, 7.62x39, what's not to like? Well that new 6mm ARC might be the best, if Ruger chambered it.
