Things have come together nicely today.I have put the Leupold scope on my rifle and it is staying put.And today I did my very first testing with varying the seating depth.I am most impressed. I was changing the seating depth by 10 thousandths at a time and I watched my groups march down from .94 inches to .18 inches.I understand I can now further fine tune this seating depth for more accuracy. So what is my next appropriate step? Do I need an aggregrate to be sure the load is stable, or should I head on out to 1000 yards to see if these very fast bullets at 3340fps are going to spin themselves dizzy. Or is there something else that I havn't even considered? Something that should be addressed. I 'm trying to get a great hunting load that I can depend on. Thanks.