C cornbelt Private Minuteman Mar 13, 2013 5 0 Mar 14, 2013 #1 Mar 14, 2013 #1 Has anyone used IMR 7883? I'm not finding data anywhere. I'd like to load it in a .22/250 and have been informed that a 15% reduction from IMR 4831 is the place to start -if it doesn't overflow the case, as its bulky (7lb to the gal).
Has anyone used IMR 7883? I'm not finding data anywhere. I'd like to load it in a .22/250 and have been informed that a 15% reduction from IMR 4831 is the place to start -if it doesn't overflow the case, as its bulky (7lb to the gal).
