RE: Hornady Light Magnum cartridges - as good as they seem?
Bigcountry:
I believe Weatherby uses Norma MRP-1, 201, and 204. Using Norma Powders one can match Weatherby' s Ballistics (I have been doing it since 1995). (They might use MRP-2 for .30-338 Wby. Mag., and for the .338-378 Wby. Mag. but I am not positive). I asked a Weatherby Tech. at the Rocky Mountian Elk Foundation Camp in Reno, and he reluctantly confirmed my suspicions about Norma MRP-1, 201, 204. Good Shooting!!