H1000 is one of the best powders for hunting due to great accuracy potential, clean burning, and most of all, temp stability. Not the absolute highest velocities however.
I have loaded for 7 or 8 different 7RMs using 175 to 183s over H1000. Usually between 68.0-71.5gr. Speeds have always been between 2940-3090 from 24-26" barrels. Plenty for taking game out to 1000+ as long as the shooter is capable and conditions are right.
My personal 26" 1:8.5" 7RM pushes a 180 Hybrid @ 2996fps over 69.0gr H1000. Taken elk from 75 to 662 with it. Both pass throughs. 75 yards had a racquetball sized exit, 662 was about the size of a $.50 piece. Neither elk went more than 40-50 yards.