Thanks All.
My partner was behind me watching and he said he thought the first shot was the heart shot, pass through. The bull took off and I continued to shoot. Three more hits, one neck in front of shoulder, pass through, shoulder blade, found under off hide, quartering found in hind quarter...
180 Nosler ETIP, 300 RUM, 3370 MV.
Shots from 395 to 410 yrds with rangefinder.
2 shots were pass throughs, heart and neck shot. 3 recovered from moose under off side hide.
All bullets weighted from 178.2 to 178.6 after they were cleaned up.