I haven't played with higher vols in cast for 30 cals in a number of years. However when I was in my 20's and was a bit vol happy, an old time gunsmith/hand loader advised me to look at jacketed starting loads, and with powders like 4895, 3031, 4350, 4831 etc. Back then, Hogden was
selling surplus 4831 and BLC-2 for under a buck a pound, and then I could afford 10-15 lbs of either, and shot a lot of it. I was then only interested
in getting maybe 2200 max out of an 06, and did so with both 4831 and BLC-2, with decent accuracy from a pre64 M-70 Win. I was stationed just
45 mi from Hogden at the time.
Back then if I stayed under 1 1/2" at 100 I was quite satisfied, and was tickled silly when I got an occasional MOA group. I didn't weigh cast bullets back then, just went with visual. Back then I used a home brewed lube of Bees Wax, Vasoline, Crisco, and graphite. Messy but it worked well and was cheap. When I started using shotgun/pistol powders and vols in the 1600-1800 range, it was obviously cheaper (did I mention I am cheap), was accurate etc. Now that Waco has peaked my interest again in vols above 2000 in 308, I will start using the advice of that old gunsmith/reloader in Topeka. Would like to think with an additional 50 years of experience in reloading, I might be able to do better than when I was in my 20's.
Paul