If you make your own venison hamburger here is a simple tip.

Run all the venison hamburger through the meat grinder the second time. This makes it a lot less "tough" and really smooths out the texture.

A lot of people know this but sometimes little tips can slip "through the cracks".

~Happiness is flying brass! -Country Boy

countryboy;
i would also add 10% beef fat, so as to not make it to lean and burn.
and yes running it twice does tenderize it. good point.

don't fear the night
fear what hunt's at night
the snakeman

what size grinder plate do you use and do you use the same one for the second grind? i know for brats when stuffing i use a 3/4" plate but it has already been ground twice. i have always only ground buger once.