I do reload and have used the .257 bergers, but in a 25-06 not a Weatherby. Many love this bullet, but I did not like the performance on game, they did not expand on two seperate mule deer. Plus, the catch to making them shoot well, often has to do with the seating of the bullet relative to your gun. You can not fine tune this with factory ammo. You might buy a box and try, you might get lucky. Plus, the reason most go to bergers is because of the high Ballistic Coefficient you can get, but in this case the Berger is not much higher tha the Accubond. For what it's worth, I am now using the accubond in my 25-06 instead of the Bergers. For full disclosure, I do use Bergers in my 7mm and have been very happy with performance on the target and on game.