ORIGINAL: bigcountry
well, all I can suggest is a good consistent crimp. Lee's factory crimp is really nice. Or just use the RCBS carbide die.
Also only flare as much as needed to seat the bullet without problem.
I like the 240gr XTP and 24gr of H110 myself for hunting. 300gr you start to beat up on your hand.
I agree with what this man has said, and would only add: Crimp as a separate step if you use a seating/crimping die. Seat the bullets to the required depth with the die out far enough that the crimping shoulder does not touch the case mouth,THEN BACK OUT THE SEATING STEM, SCREW THE DIE IN FAR ENOUGH TO APPLY A GOOD CRIMP, then crimp the rounds as the last step. BE SURE ALL CASES ARE THE SAME LENGTH BEFORE LOADING THEM, so you get the same crimp on each one.