Indeed, how short is short enough? CP makes great 10" barrels in Shocker length, though I'm not sure if they have enough non-ported length to work within the Shocker's safe operating pressure range (unless you mean an 03 Shocker, that is). DYE SS or one piece aluminum (older style, no longer made but can be found) 10" work very well, as would a 10" BOA snakebite if you can find one. Equation makes great 8 inchers, particularly the Bizerk which is an insert based multibore, and I'd imagine you can find 8" Armsons as well.
How far are you wanting to go with this?