These two are my favorites with the 143( and 145hht). The h4831sc is super consistent but slower. I have taken h4350 to 59 with no pressure signs at 3080 but shoot it at 3030 bc it works. I am shooting a 20" 7 saum Gunwerks.
Forgot to mention this is out of a SA. If I remember correctly I was loading at 2.850 COAL even though I can take them out past 2.950. They seem to like a little more jump in my rifles.