I'll second the nomination of CFE-223 as excellent in both. It's all I shoot in .223 with 50-60 grain bullets and initial experiments with it in .30-30 shows great promise. (But I've only worked with it in .30-30 in a Savage 99G with jacketed bullets. Other .30-30 work at Chez Gnoahhh is with other guns, powders and cast bullets.)

"You can lead a man to logic, but you cannot make him think." Joe Harz
"Always certain, often right." Keith McCafferty