ok, well first of all, I would say those barrels are around 22" or so. if you are going to be stalking and shooting within 300 yards, definitely don't need such a long barrel. even 16 in barrels can put rounds accurately down range at over 600 yards if it is a good build and you have the ability to shoot that well.
and the scope on the bottom one especially is not very functional for hunting, it's more a target or just straight up long range scope where you are either going to be sitting at a bench or in the prone.
those barrels are also bull barrels, nice and rigid and takes longer to heat up, but heavier than need be since seems like you will be firing maybe 5 shots and actually be carrying this rifle. and I am a fan of bull barrels, just don't think you need one for what you are looking for.
the rifles in the pictures are going to be heavier than you need.