Great purchase; awesome round! I have taken many, many deer, ram and boar with .300 Weatherby and with .257 Weatherby.
I only damaged meat once. One ram that I shot at several hundred yards spun as I fired, and the beast took a 150 grain Projectilation H. It blew literally about 10" hole in the beast. I do have photos, but they are too gruesome to post.
I always try to fire into the ribs (heart/lungs). The bullets seldom have exited the far side of the body. That is to say, usually 100% of the tremendous energy has been transferred to the critter.
All the same, 100% of my harvests have been 1-shots, instant kills, even to 525 yards. The only reason I purchased my last Weatherby Mark V in .300 Winchester Magnum is the price of Wea. ammunition. Reload and you'll save money.
Again, awesome, awesome round! You'll be pleased. BTW, Accurate Arms 3100, Reloader 22 and H4831 are all great powders for reloading.
Doc2005