Looking for advice on a powder choice for a friend's 300 RUM.
I have 180grain ballistic tips and accubonds, with WLRM primers. Although I have several powders on hand, this HUNGRY cartridge limits me to only a few powders that I have over 1Lb on hand. These are:
H1000 (limited to only about 1.5Lbs)
Looking at the Nosler manual,
H4831 is relatively "slow", 3089-3205fps.
H1000 is also "slow", 3089-3225fps.
Retumbo is among the fastest velocity range, at 3204-3343fps.
However, Retumbo is 99-103% load density. (I do have a long funnel for these situations
ps. Also have a box of 180gr TTSX, which will probably require a different load altogether... Input appreciated.