Any body travelling with a rifle should always do some check zeroing at their destination. Removing / replacing the stock should n't make much difference especially if the action screws are torqued correctly - put small witness marks on them with a sharpie pen and turn them back to the witness marks. But much of Central and Southern Africa is at 4,000 to 6,000ft with definately thinner air and probably enough to change zero a bit. Also the temperature will have an effect. Not so much now with modern powders, but in the grand old days of Cordite you had Tropical Ammo, as ammo loaded for Europe would / could cause sticky extraction etc.
Much better to take a test shot or five. All the advice I have read is to take your max allowed ammo to ensure you have enough to allow to for re-zeroing if needs be.
When zeroing at home, if you have iron sights, make sure these are zeroed for your ammo and are not just there for decoration. Then mount the scope and zero and leave it on. This will prevent the scope failing, but if it does you have a secondary sighting system for the time when you have smashed your scope on the pickup and that prize Kudu appears.
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