Quote Originally Posted by CFJunkie View Post
Ernest T,
My 26-in barrel 12 FV 6.5mm CM with an Oryx chassis shoots H4350 bests of all powders.
With H4350, Hornady 147 ELD-M # 26333 and Nosler 140 gr RDF UHBC #49824 both average 0.307 for all the groups shot.

Best loads with 147 gr ELD-Ms were 0.234 @ 2666 fps, 0.243 @ 2661 fps, 0.259 @ 2666 fps, and 0.269 @ 2666 fps.

Best loads with the 140 gr Nosler RDF UHBCs were 0.281 @ 2688 fps and 0.297 @ 2687 fps, respectively.

With all weight bullets including 130 gr, 140 gr, 142 gr, 143 gr and 147 gr, H4350 has averaged 0.324 for 287 groups.
Next best powders are H4831 SC that averaged 0.351 for 19 groups, and IMR4451 that averaged 0.352 for 195 groups.
IMR4350 averaged 0.362 for 69 groups and RL-17 averaged 0.401 for 13 groups.

Of the top 10 loads for that rifle, 8 are with H4350 powder and 2 are with IMR 4451
Of the top 25 loads, 17 are with H4350 powder.

Not saying that all 6.5mm rifles will like H4350 powder best, but that it is worth a try.
Note the velocities are all pretty close but that is because I get the best results using the velocity that gets the exit time that minimizes barrel harmonics.
I got pretty results with H4350 so far. You just can’t find 8 lbs of it right now. I guess the good thing is Hogdon powders do show up on the shelf regularly unlike Alliant powder.