I recently picked up my first AR and did the early doe season with it. I spent a lot of time at the range with it this summer working through different handloads. These are the results using load data from Barnes.
http://www.barnesbullets.com/images/223RemingtonWeb.pdf. I loaded 62grn Barnes TSX with 23.5 grn of TAC. I played with the COAL and found that the suggested 2.250 worked best in my DPMS 16" bull barrel. I am zeroed at 125yds shooting 1" groups. Muzzle velocity is about 2950fps.
These are non-lead core bullets (copper only). Upon penetration, they open up like a broadhead.
Results:
1st doe: Was hit by my son with his .243 @ 230yds and I ran a round out to help her down. Very comparable wound channel in comparison to his hit.
2nd doe: Was jumped and i put out 3 shots while she was quartering away at 80yds. I connected with 2 rounds, the last shot being fatal as it entered behind the shoulder and exited with a baseball shape exit wound in the brisket. She went down hard.
Conclusion: The first doe was further than I wanted take with my AR. The 2nd doe, although harvested, was not a quality shot as she was quartering and I couldn't get good shot placement. Additionally, it was WAY to easy to keep pulling the trigger vs using my 7mm bolt and forcing me to slow down. I would have preferred using my 7mm mag because we were hunting farmland and it's usually longer distance shots or we drive one out of cover. I am planning on using my AR this regular season in the woods from a stand where the longest shot will be about 100 yds, I will have a good rest and I can take my time. Barnes TSX are the way to go.