My 22-250 had a 24” 1:8 twist Criterion barrel. With 75gr Amaxes, I got tiny groups and decent velocity (3167 IIRC) from R15. 5 shot groups at 700 yards were 3-4”. I tried H4350 but never got near the precision that R15 gave me.
Currently shooting 88gr ELDs from a 7” twist .22GT. Pretty much identical case capacity to the 22-250. This combo likes H4350, giving me a 10 shot group in the .4s.
So, I’d recommend something in the R15 burn rate with 75s and something in the H4350 burn rate with 88s.
John
Last edited by Hondo64d; 01/07/23.
If my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then I will hear from heaven, and I will forgive their sin and will heal their land. 2 Chronicles 7:14
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