Boer, I used a 225gr Interbond out of my 338 Ultra Mag to take a cow moose. The shot came at 50yrds, took out both shoulders, lungs and was under the hide on the far side. She went maybe 5 yrds. The bullet came back to me at 185.5gr, and a nice mushroom to boot! I used 90gr of H4831sc with a Fed 215 primer. I am sold on the Interbonds.
Duane