Scored some IMR 7977 recently. I know it is being discontinued. But does anyone have any experience with this powder in these cartridges. I have almost any bullet possible so any data would be great. Looking online and the manuals I have I am not finding much for that powder. Thanks.
IMR 7977 In 7 SAUM, 6.5 SAUM, 6.5 PRC, 30 Nosler, 7 WSM, 270 WSM, 6.8W
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Quick search showed loads for 6.5PRC and 30 Nosler. I didn't check for the others you listed.
What's the reason for discontinuing. Poor sales?
lancetkenyon
Well-Known Member
Very similar to H1000, but not a direct like-for-like. I have about 6# of it and it works very well in cartridges that like H1000.
That's what I figured. Any usage with 7 or 6.5 SAUM?
lancetkenyon
Well-Known Member
Plenty with H1000, but not much with IMR7977.
Frank in the Laurels
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..seems too slow for short mags ??
I think Hodgdon wants to push their other magnum powders, and I believe the location of the plant and availability of resources there have something to do with it.
Not if you are trying to push the heavies. In 270 WSM it probably is too slow. H4831 is my go to for the 270 WSM. But I use H1000 and Magpro in the 6.8W.
Frank in the Laurels
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..enjoy the experimentation..lol, glad I'm over that stage in my life being an old geezer.. down to 3 powders for everything I own..H-4350, V-133, and Varget...life is simplier.
lancetkenyon
Well-Known Member
Slightly faster burn rate than RL26 and H1000. Very similar to N565.
150. IMR7977
151. RL26
152. H1000
lancetkenyon
Well-Known Member
Nice to have a short list of powders for everything. What cartridges do these cover for you?
I could possibly consolidate to fewer than I use, but I have tested a ton and know what works best for me, AND where I hunt.
Varget, H4350, H1000 could cover everything I shoot.
But add Benchmark, RL23, N565, and N570 and I (and my guns) are much happier.
Frank in the Laurels
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..just about everything you can imagine fits into these three..I loose a little velocity in my big belted mags but what's a 100=150 fps compared to 50 cans starring at me like they did for 60 years reloading...nevermore..up to .338wm
