I saw this Video On these IMR powders and found some load data on Hodgdon's Load data that may help.
J E CUSTOM
Yep, I posted some of them on the Hodgdon thread too ...
I saw this Video On these IMR powders and found some load data on Hodgdon's Load data that may help.
J E CUSTOM
I wish powders would list a average FPS change per degree Fahrenheit. It would help with choosing powder.
Doing some load development on a new 6.5 CM, and had found a couple of sub .500 moa recipes, with H4350. Then I can't find any more H 4350. I did some work ups with IMR 4451 and IMR 4350. I got a few recipes of IMR 4451 in the .500-700 ranges, but nothing below that. I was able to get a load with IMR 4350 below .350, on two ranges, on different days, and about 50 degrees apart. I've tried the IMR 4451 a few times, and the accuracy in two of my rifles has been good, but not great.
I just tried 7977 in 300 WM with 168 Amax and 212 ELDX. Everything I tried printed 2.5" or greater. Same bullets with AA4350 shooting bug holes. RL23 shooting just outside MOA.
7977 does not have same burn rate as H1000. It's faster. I had to drop two grains under H1000 listed data due to sticky bolt syndrome.
Not sure about that, lot of untruths in advertising. Just who would hold companies to an industry standard? One minor detail between 2 tests skew results. Look at advertised BC's of bullets.I wish powders would list a average FPS change per degree Fahrenheit. It would help with choosing powder.
It says 7977 performs comparably to H1000 but charge weights are materially different....
Doublez,8133 has had very good results in overbore calibers. The downfall is velocity. If your insistent on shooting your bullets as fast as humanly possible, this powder isn't for you. Excellent replacement for Retumbo or N570 but will not produce the same velocities. In some ways it's stability makes it better than Retumbo. You can go critical with Retumbo in one grain where 8133 seems to gradually show pressure as you increase your charge.