I have around 5 pounds of, IMR 4350 to, shoot Up and my Main "All -Around", Steel / Yote Load, Bullet, in my .22-250 will Be, the 69 gr. SMK's as I KNOW that, they can produce, awesome accuracy w/ a little bit of, "Tuning".
I will Be going to, StaBall 65 Powder for, the 75 gr. Horn BTHP, 77 gr TMK / SMK's and maybe some, 80's, later.
IMR and H- 4350 do NOT lend themselves to, being, "Thrown" thru, the older, Drum Powder measures, very well.
They are making Better, "Temp insensitive" Ball Powders,.. Every Day.
I already use StaBall 65 in my 6XC and 65 Creed Rifles w/ Thrown Charges and I really, Like it !
The 69 gr. or, 77 gr. SMK's will Be hard to Beat for, the Price & Accuracy,.. Level.
The Horn #2279, 75 gr BTHP Match bullet, IS,. Way better than, the 68 gr Bullet,.. IMO and,..
for, the Price, .. it's Outstanding !