Need load help 280AI and RL23, RL26

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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.
 
Been fighting the "dreaded donut" in my 280AI Nosler brass. However RE 23 for the 143 Hammers look good and hoping this shoots better with a predictable bullet release. Will test once this wind settles down on Wednesday.
Curious if any of you have the donut issues....
 
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