also - what twist rate are you going to go with? The more twist with the shorter barrel - you'll be able to stabilize the bullet better. Like 1:10 would be good for your 24" - you'll just loose a little velocity than say a 26" barrel with the same twist.
I used the 168 amax match out of my AR (POF) at about 50 - 200 yds. basically mine were blown in half or nearly in half. One time i did actually see the 2 parts flip end over end in the air through my scope at about 80 yds out. My 223 75 gr hollow pts match ammo puts a nice hole in them but not...