My oldest daughter who is now 28 started calling ground venison "Bambi Burger" when she was small... She was about 5 or so. Yesterday I made Bambi burger. Venison has very little fat and in order to have a good tasting ground meat you need a little. I buy the cheapest hamburger I can and then I mix it about 50/50, that gives you about a mix of 87/13 which is going to be real close to ground chuck.
Start out with boneless venison that has had all of the facia (shiny white coverings on the muscles), fat (it is gamey tasting), and tendons (the stringy, tough, white things) removed. Cut it into small enough strips so that it fits into your grinder easily. I use a grinder attachment for my KitchenAide so I cut them into about 1 inch strips. first I run it thru with a course blade (it has the bigger holes). Then I runb it thru with the fine blade.
As I run it thru with the fine blade I also run the hamburger thru at the same time. I take handfulls of hamburger and put it into the bowl of course ground venison and then get a piece of hamburger and a piece of the venison about the same size.
When you are all done your burger should look like this:
Put the whole sheet in the freezer. After they are frozen then take the patties off the tray and put them in a big bag. Then you can take out how ever many you need for dinner and cook them the same as you would the store bought frozen patties. The ground venison you can use the same as you would any other ground meat.