I like mine still running so once it got to 160 I'd pull it. Never smoked tenderloin though. We have cooked back straps, Sous Vide vacuum sealed , then cold smoked it to keep it from drying out.
Are you wanting to know cooking temperature or temp to pull the meat? I have a Big Green Egg and if I am doing venison tenderloin, I would get the Egg temp to ~275 - 290. Put whatever hardwood lump you like for smoke (I have been experimenting with pecan and really like it) pull venison at 140 F and allow to rest for 10 minutes and then slice into medallions and serve
Take any venison roast, dry brine it over night, leave it damp and hit with your spices, smoke till IT is 140. It will cook pretty fast with the smoker about 250 .Slice hot or cold. 160 is way over done for venison.