I've been working up loads with 160 AB's using 4831SC and R-23, as well as 168 and 175 bergers with R-23. The R-23 is showing to be the powder I'll be sticking with. I'm getting around 2950 with the 168's and 2875 with the 175 hybrid's I borrowed load data from nosler and hornaday to figure a starting weight for the 175's and ended up 1.5 grains over their max, but still am not showing pressure signs. The group is under .5" and ES was 9 so I think I'm going to call it good there. Hopefully alliant can get some more of it on the shelves.