Yep - in my .38s and .357s, all bullets, I seat & crimp in one die.
Try to flare the brass just enough - not too much - so as to not scrape any lead or lube off when seating. It shouldn't be much more than any other bullet.
I seat mine so that I lightly crimp into the crimp groove. About 1/16 or so of the bullet will stick out above the brass. Basically you're just straightening out the flare you put in earlier. Some people like a bit tighter crimp, thinking it helps build up a little more pressure and give a better powder burn. Try it both ways and see what you think. I can't say I've really noticed one way or the other.
Good bullet. My Smith m15 loves it.
Q