No RL 33 .264 Win Mag data on Alliant's site either. Says it was developed for the .338 Lapua. That's quite a bit bigger capacity.
Suspect there's little or no IMR7977 data due to the powder being relatively new but the .264 WM is not. Contact Hodgdon and ask. Probably not tested though.
The .264 Win Mag is more less the Red headed stepchild of reloading data ... there has been very little updating of data ...if it does get updates ...it is the last on the list ....
I haven't tried 7977 in my 264. I did try RL 33 and had very good luck with it. I started at 75 gr with a 142 LRAB and found my load at 77. My rifle is a mod 70 sporter 26" 1-9" barrel.
"
Alliant has no current tested load data utilizing either of these propellants for the 264 Win Mag.
I will submit your request to the engineering lab for possible future development. But, there is no timetable as to when this may be looked at for development.
Thanks,
Duane V.
Technical Services Rep
Alliant/Blazer/CCI/Speer"
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.