[@Dark Cloud] If you want, extrapolate with math for wherever your group started, for me I began with 80, ended up at a population of 7-800 without accounting for death, and then accounted for death (civil war happened, predators, disease, so on), and I deduced 400 or so was reasonable

Think of how many children a woman has each generation on average, to start. Account for relevant factors. So on.

More of an estimate anyways