If I'm moving on foot I'd probably just have about 300ish preloaded into magazines with another couple boxes in my pack. Probably bring to total to about 500 or so.
Handgun, probably only 3 or 4 mags and a couple boxes of 50 in the pack. So about 100 or so.
In a vehicle I'd still have the same amount preloaded in mags, but I'd have closer to 1500 rounds (5.56, 30-06, and 5.7) and about 1000 for handgun (9mm, .40 and .45)
"This is not about land or money...but the one thing that no man should never be able to take from another man: the freedom to make his own choices about his life, where he'll live, how he'll live, how he'll raise his family. "
William Travis, The Alamo: 13 Days to Glory