The 280 doesent lend it,s self to a short barrel because of
the powder it uses.
The 7mm/08 or the 7mm/WSM / 7mm saum would be better
choices for a short barrel.
The 7mm/08 will exceed the 280 in a short barrel but the reverse
is true in a longer barrel.
The 7mm/WSM or the 7mm/SAUM should match the 26" 280 with
a 14" to 16" barrel.
The 260 rem would be anoyher good choice .
A of these rounds listed do very well with short barrels.
J E CUSTOM