Handloading is like most endeavors in life, with experience and practice your skills will become honed, sounds like your 243 handload is doing performance wise exactly what you hoped for, congrats. Your 30-06 loads will come around once you get things figured out.
These days with all the new manuals along with huge online data resources that can be printed out makes for much easier acquisition of accurate load recipes that perform great. I have been delving into the 264 cal cartridges and all the hard work has been done by reloading experts, I take their load recommendations and use them for a starting point and tweak them for my particular firearm with good success.
Al