Re: Group differences in Weatherby Brass versus new Norma Brass
Another thing to keep in the back of your mind is: Along with weight sorting, are you full length resizing your brass or are you neck sizing only? If you are only neck sizing, then your brass has been "Fireformed" to your chamber and therefore should theoretically have a more balanced internal ballistic pressure for the once or twice fired brass. This will help give you a lower standard deviation in your muzzle velocity, which in turn will produce better accuracy. Providing that you precisley weigh (XX.00XXgrains) all powder charges and you are not "throwing" your charges. If you are throwing charges, then all bets are off. Also if you are shooting from a "factory" barrel, then you probably won't see a tremendous amount of difference, but you should see some.
"It's better to be safe a hundred times, than to be dead once." Will Rogers