They say the meat usually falls off the bone, but for our deer roast, the bone fell out of the meat. :)  (I just search for beef recipes when I use deer.)  I loosely followed this recipe for Pressure Cooker Pot Roast, but used homemade ranch dressing mix and brown gravy mix as the seasonings (because I used to use those in my crockpot recipe). The brown gravy mix called for flour, and I've read that can cause problems with thickening and burning, so I just went very light on the flour. 70 minutes and it was great! I added flour to the juice for gravy afterward.
Next I used this Instant Pot Beef Stew recipe, for deer stew meat of course.  I made bread in the bread machine for a very hearty meal.