I previously had a dpms 20 inch (1in9 twist) bull barrel upper that shot lights out with 70 gr Berger's atop of varget. With that being said I sold the upper a while back and have been kicking myself ever since. I now have a 24in 1in8 twist dpms bull barrel upper on the way with intentions of shooting the 75 gr amax bullets to reach out a little but some have said it will not work at mag length. Just trying to find something a little on the heavier side that will work with mag length. Any info on loads to reach out would be much appreciated.