I’m not HDM, but…
When the deer/elk is being gutted, you want to seperate the stomach from the intestines as cleanly as possible. That means it is better to lose part of the stomach to keep any contamination from the inestines out of it. After you have the intestines removed, seperate the esophagus, then you can cut open the stomach and lightly rinse the insides. You can feed the esophagus, the trachea, lungs, heart, liver, kidneys, spleen, basically everything that comes out of there except the intestines.
