Let me ask you a moral question.
If someone steals my apple, is it moral to take the apple back from them?
Is it moral to take it back from them tomorrow? next week?
If i can't get my apple back, is it moral to take a like but different apple?
If its moral to recover your apple, is it moral to punch the aggressor in to make him capitulate? break his arm? kill him?
When did it become 'your apple'?
Did it become your apple because you found it on the ground after it had fallen from the tree?
Did it become your apple because you exerted effort and climbed the tree and picked it?
Did it become your apple because you exerted effort and climbed the tree and picked every last apple, even though you only needed five to feed your family, and then tried to sell them to people who needed apples but would have preferred to climb the tree themselves?
Did it become your apple because you [or your grandfather] built a fence around the tree and claimed all apples forevermore?
Did it become your apple because, once claiming all apples, you began paying those who needed to eat 'your' apples to climb and pick fifty apples in exchange for one?
Unless we determine how it becomes 'your' [or 'mine'] apple in the first place, we're missing the point of the discussion. It's very easy, but simplistic, to discuss force 'after' it becomes someone's apple. When we hear 'take your apple', we're supposed to immediately think 'oh man, going up to that person and taking their apple is wrong'... but for some reason we're never supposed to discuss what made it their apple in the first place, and if any 'theft' or 'force' was involved.
to answer your questions: no, no/no, from another or from a tree? (no/yes), no (mildly - force should be avoided), no, no.
to answer my questions: it's only moral to claim that apple for yourself if you found it, earned it, and did not take more than you needed. after that, we need to question original resource allocation/theft and the question of morality becomes extremely complex and not so cut and dry... and completely explains why different 'moral' people fall on different sides of this discussion.
if you, through force [of fence, guard, etc] claim resources that were once public, especially ones as important as a food source, I find it disingenuous at best to then claim 'theft' when the people rise up to take them back.
It's force when villagers pitchfork or tar and feather a man, too. But leaving out the fact that he was an abusive tyrant that mistreated and over taxed his people results in a very different answer as to whether it's moral or not.