.257 117 grain SST

Hornady #6 or Hodgdon doesn't even list 4064 with that heavy a bullet.
It is too fast a powder for heavy bullet 25-06 use.

Hornady shows IMR-7828 - 117 SST - 25-06:
.Seating = 3.170" OAL
Start load = 50.3
MAX load = 56.6

Hodgdon web site also has IMR-7828 SSC powder data if you care to look there.

rc

From a 24" Rem 700.
2,700 - 3,000.

rc

Yes ... 7828 is a much better powder for 117-120 gr bullets. I been shooting the load RC posted for quite a while! Very good accuacy and speed. I'm getting 3090 fps out of the 56 gr load with a 22" barrel Browning A-Bolt. I get more FPS out this gun than I did a 24" Win model 70, for some reason. Did I mention great accuracy.

Jimmy K

Lyman #49 lists IMR 4064 for 117 grain SP bullets.

Starting load - 37.1 grains/2566 fps/40,300 C.U.P.
Max load - 42.4 grains/2866 fps/49,600 C.U.P.

It has the IMR 7828 listed a little more watered down than the specs rcmodel listed from the Hornady manual, with the starting load at 49.5 and the max at 55.

Guys like rcmodel have much more experience than I, so I would take his advice and use the 7828, but just wanted to let you know that Lyman does list data for the 4064.

Hodgdon data

117 GR. HDY SPBT
IMR 7828 SSC
3.165" coal
51.0g 2879 46,600 CUP
55.0g 3037 51,200 CUP

nothing for 4064

You may find another sweet spot on up towards the 55 grain mark if you need the speed.

Usually there are more than one sweet spots with a powder/bullet combo, if the powder is one that can be loaded that way, a lower one near the starting point, one somewhere near the middle and one near the top of the powder range.

56 grs of IMR 7828 is max with my rifle, I usually shoot at 55 grs.

Jimmy K