Another powder I’d try is 2000-MR. Been hard to find but it offers the velocity without the pressure spikes like CFE223.

I recently grabbed an 8# of it; works well in .308 and .223 heavy.


I’d be curious to see how Hornady’s SBR specific ammo/powder charge differs from a non-SBR variant of an identical bullet weight. Might just have some additional flash suppressant in it, who knows