It has been my experience that H355 is pretty close to idea for 5.56 and .243. I believe it burns too fast for the 30-30.

4064 will be the cat's meow for the 30-30, but a bit too slow for the small caliber rifles.

I believe the one powder that will give you acceptable results in those three calibers is Varget.

Now, and important note; Often the "right" powder is based on bullet weight. for instance, I get outstanding results loading H355 in 5.56 for bullets no more than 62gr. Beyond 62gr, the H355 is so fast it causes pressure spikes. When I load projectiles of 72gr and above, my first choice is Varget.

So be aware, in one caliber, one powder may be completely inappropriate based on projectile weight . . . and sometimes even the overall length of the projectile itself.

And yeah, I do tend to load hot. I want all the "juice" the caliber can give me. . . with the exception of the 45-70, but that is a zebra of a different color. One that kicks like a pissed off mule if you load it hot. Fortunately, if you get curious and research loading for it you will find that it is one of the darned few cartridges that actually has better terminal results in the lower to mid velocity range.