this was my mule deer buck from last fall. I ended up doing the grinding sometime around early/mid june (i'm so lazy about getting to my grinding, it's bad).
i used pork belly to provide fat at roughly a 20% mixture in the grind.
seasoning was hefty on the salt, generous on chipotle chile powder, black pepper, lots of garlic powder, and a dash of store bought al pastor seasoning. If i had to say what is the single most important step, it's letting the burgers sit in the fridge for at least an hour after seasoning.
smoke at about 185-195 for forty minutes (reality is, as i discovered, a fair amount of the smoker get's over 200 when it's set at that temp anyway) if the burgers weren't so massive i'd cut it to 30 minutes max. usually as low of a temp as i can while still maintaining pretty frequent smoke events.
after opening up the sear grate on the smoker, really only need to crank the smoker to 300 or so to really start getting flames going; since the lid stays open it never stops feeding pellets cause it can't reach temp. cast iron should be over 550 degrees.
the invite only hinges on bringing a 12-pack of Topo Chico Hard Seltzer