I already have some 300 Win Mag pet loads for hunting that use IMR 4350 under Grand Slams or SSTs. Anyone have long range target loads that I could start with?
Note: There's all kinds of data on the internet, but I would trust a fellow Texan, first.
As mentioned, if you have a load that works, is accurate, don't mess with it.
Back when I hunted, and I found a load that worked well, I left it alone. The only loads I tweaked or played around with were those for target shooting.
I use a lot of that IMR4350 powder. Very versatile and gives great results.