Ridge Runner's got you pretty well covered...As far as resizing for two guns, if they cycle OK for you, that's good. Sometimes autoloaders are a little picky about resizing and may want a small base resizer die.
With the chamfering, only do enough to remove any burrs or roll-over from the trimming. Be careful not to effect a knife-like edge on the case mouth.
Sounds like you're good to go.......