Personally, I wouldn't go shorter than 24" if I wanted to shoot to 1k. I have a 24" and it runs the 140 Berger VLD's at 2,790 / 2,800 with stellar accuracy. When I ran my 26" rifle ammo through the 24" rifle it lost 120 fps, 60 fps per inch and I lost the accuracy as well. I simply added powder...