I just got a new stiller tac-338 action and can't decide really what I want to do with it?! I shoot a 338-378wby now and love it thought of doing another then thought of 30-378 but not sure then I was set on a 338 Allen express or a 338 lapua improved then figured why when I have so much knowledge and reloading stuff for 338-378! Then I was wondering about m doing a 378wby mag and shoot the 350g matchkings!? Anybody ever think of this or has done it? How will it perform? What kinda speed we looking at?? Punching some numbers and if I can get it going 2800 fps or more it will out perform the 338-378 energy wise at any distance. If anybody has any ideas or info on this let me know! Thank you!