Which powder to get more speed in 7 Mag

[remingtonman_25_06]

H1000 or Retumbo gives good velocity and accuracy in a 7 RM, plus they're very consistent and temp stable. Those are my favorite powders for magnums, for the above reasons. A lot of powders will give good velocity, but are either temp sensitive, or not very consistent lot to lot.

 

[270elk]

I have had very good luck with RL22 and 26 both provide excellent velocity and accuracy in my rifles. There are urban-legends about RL22 having some temperature velocity swings but finding empirical evidence is difficult. My load in a 300WM has shown about a 55FPS swing in velocity from a 25 degree day to a 95 degree day. Not enough to change anything for hunting purposes.This is my rifle and my magneto speed chronograph; not a scientific or industry report. RL 26 is another beast. It provide amazing velocity and accuracy in my 270s and 300WM, but availability has been the limiting factor.

 

[TackDriver284]

Don't hesitate to give Enduron 8133 a try. I hear the burn rate is similar to Retumbo.

 

[ReloadKy]

Thanks for all of the suggestions.

 

[archeratlrg]

My Nosler Loading manual and others all show velocities in excess of 3,000 fps using both H4350 and H-4831. Both requiring over 60 gr. of powder. What loads are you using? I would rather hit "exactly" where I pointed, than gain a little more velocity.

I know this is an older post, but im using 68.5-69gr of H4831sc behind the 160gr partitions/accubonds for 3100 out of my old stainless barreled 700 Remington. Faint electoral marks, but not enough to worry about. 6-8 loading on my brass so thats good too. 70.5-71 grains of H4831sc will get me over 3300fps with 150gr bullets and bughole groups.