That's my strategy as well,
I use 500s for my hunting/low volume loads
N540 with 223rem and 77 TMK
N555 with 22 creed with 77lrx/88eldm
N560 with 7saum
Accuracy is decent, I get an extra 100fps over varget/h4350/h4831sc for the equivalent pressure but I wouldn't use them in high volume guns...