I've been having trouble finding a good load for one of my 25-06's. After nailing a good sized axis doe at 75 yards and having the 100 gr CNC bullet not passing through and then tracking her for 125 yards, it was time. I switched to a 120 Speer cnc boattail, got a great group and commenced whacking whitetail doe with it. Then had the same thing happen with a young axis buck, no pass-through.
I switched to the 110 Accubond and started trying powders - IMR4831, H4831, IMR 4350, RL 23, RL 26, IMR7828ssc, RL 22 & 25 & 19. The only ones that gave me a decent group was the RL 26 but a max load was only 2600 fps, and, RL 19 which gave me a good group and decent velocity (2850) but when summertime came, the RL 19 load was blowing primers and leaving extractor marks on the brass, definitely too hot.
Enter IMR 7977. Ran loads up to 59gr in Hornady 1x fired brass, and got a 4 shot group (all I loaded) that measured just a tad under .5" @ 100. First two shots were .4 apart and the remaining 2 shots stacked into the first hole.
I then loaded up 12 more and shot them over the magnetospeed to find the group averaged 2985 with an SD of 15 or so.
Next, I'll load up a mess of them and start seeing how they'll do out to 500.
If this Enduron powder is as insensitive to temperature changes as advertised, I should be gtg!