+1 on Retumbo! I shoot 300 grain bullets .050 off the lands with Retumbo!

A person here told me Retumbo would be my best friend, I tried it, and he was right! For some reason, my 338 likes to be off the lands.

Use recommended powder loads from the book and work from there!

I have shot 250 Accu Bonds and they would make a great hunting round, but I never got my groups as tight as I got the 300's.