Hi, I recently re-loaded some 223. I went off sierra re-load manual for ar I used TAC and exterminator powders. I loaded 3 different loads of each powder 5 rnds each. I then shot this at 100yds out of my handi rifle. The loads were terrible they were at best 11/4 to 2 1/2 The handi rifle is 1-12 twist the ar manual was for 1-9. I was wanting to come up with a good load that would shoot both in the handi rifle and my BM ar 15. Any help will be appreciated thanks.