As some said, it depends what im hunting...
Big game I usually have full gun, full pocket....up to another 50 in the truck.
Coyotes I usually would have 100 or so, plus some 00 buck for the 12guage back-up.
Gophers....well I went gopher shooting over weekend(Was supposed to be a 5 days shoot but we got snow/rained out)I took with me approx. 20,000 .22LR rounds, 800 .204 Ruger rounds, 25 .270Win rounds, 100 .50cal BP loads, and 350 12gauge rounds.
And that was just my stuff
I went through 100 .204 rounds, 150 12gauge rounds, and about 1000 .22LR rounds
If it hadnt rained us out I woulda used ALOT more!! LOL!!