You gotta love these affordable, AR-Stoner (E.R. Shaw) barrels. Once again, these Amax 123 gr bullets make even a mediocre shot like me, look good. Combined with Alliant's new AR-Comp powder, they were fairly accurate across 2gr of powder variation. AR-Comp by weight delivers more velocity than 8202. Like 8202, it's a small granule extruded powder, but not as small as 8202 and less dense so you can't pack as much in by weight.
That having been said. Range conditions were ideal as I head toward the weekend when we tear it down. So ideal that, cough I had to use up some of my cough banked 168 hours of sick leave cough cough. When I drove the Mrs to the park-n-ride, as she exuded jealousy, the bank said it was 59 degrees out and with the windows down the whole way, it combined with the low humidity to make me eager for the range to open a 9 AM. My only regret is that I didn't load up many more other calibers I'm working on to make it a longer range day. Yep, we're definitely starting the slow slide toward our 6 months of winter. We had a longer duration winter than usual last year, then maybe 2 weeks of spring and boom! Hot weather set upon us like a lot of the nation. Hopefully the autumn will be longer. The range is closed the next two weekends.
Anyway, my gut feeling is this powder, despite being very powerful for it's burn rate, is a titch too slow for this weight range of bullet in this caliber. For folks considering hunting with 140gr bullets, I'd bet a dollar to a doughnut it would fall smack dab in the middle of the sweet spot. If it gets your interest up, look at the recipes for .223, .308, .22-250 and .223 WSSM on the Alliant web page. The velocity yields are unbelievable and that from a wide temperature (claimed) powder.
Here's the four 5-shot strings from my 24" barrel and their respective 100 yard groups. I was mainly focused upon the chronometer, but tickled pink with the groups for a range hack like me.
They compare favorably to my first at bat with them last May Here.
If you like to play with alternate powders in between sessions of shooting the same, old, reliable stuff, consider a bottle of AR-Comp.