Hey Lobo,
I wouldn't worry about losing much by going shorter than 24 inches, in fact I am looking at shortening one of my ML for treestand/thicket hunting. In Sam Fadalas' Black Powder Loading manual, he found such little difference in the knight MK 85 w/ 20 inch barrel and MK 85 w/ 26 inch barrel, he did a lot of his testing and load development with the 20 inch one only. I 'll probably have my LK 93 cut down to 18" and have a 5.5 lb carry all day rifle.
Good Luck,
Palmer