after researching load data from the speers/hornady/nosler reloading books, it's seems you won't be able to duplicate the velocity/energy that weatherby factory ammo is loaded to. i've been reloading for my 7mmrm and 22-250 w/great success, but haven't started to for my 257/270/300 weatherby mags. it seems reloading and staying in the load ranges/grains would only result in decreased costs per round and decreased energy/velocity. don't need to reload for these weatherby calibers, as i'm completely content w/the factory ammo. all 3 shoot extremely well, to my standards, anyway. reloading for that particular 7mmrm was out of necessity, as grouping was terrible at 100yds(1.5-2.25") w/all factory ammo tried, and now .5-.75" w/handloaded 140 accubonds, at 3138fps avg. long question short, can the extreme velocity/energy coupled with great accuracy that weatherby ammo provides be matched safely? Merry Christmas to all!