Not sure about loads, but powder wise W-748, IMR-3031, H335 actually 223 Rem is pretty powder agnostic. Small rifle primers 55gr 224 round. You might also want (depending on your brass if MilSpec) one of these
http://www.dillonprecision.com/#/content/p/9/pid/25263/catid/8/Super_Swage_600 it simplifies removing the Crimped primers MilSpec use. If it's foreign MilSpec, check to make sure it's got a Boxer Primer Pocket (single flash hole), and not a Berdan Primer Pocket (Anvil in Cartridge head, and two flash holes).
If no one has suggested powder weights by the time I get home, I'll update, my Hornady has a couple of loads for 5.56mm (AR), and a lot for 223.
rfwobbly is correct, load wise, you can vary your powder loads down (or up) a lot more with a manual action than an auto-action, since there needs to be enough energy released (but not too much) from the round to cycle the auto-action, manual action the firer (you) supplies the energy.
You haven't done anything wrong firing commercial ammunition in any of your current guns, but reloading is a different game entirely.
If you haven't already done so get and read the ABC's of reloading, it covers in far greater depth, the difference between manual actions (lever, bolt, etc.) and Semi-Auto actions. As well as showing real world kaBooms from double charging by accident, and good safety protocols. Great read.