kx592, I don't blame you. With today's prices, some sabots going for about the same price as rifle safari ammo, it's not quite the same a zeroing the sights on the old .22 LR.
The next time you have a question, please fully describe what you have in mind in the OP. This time, we got completely sidetracked discussing unloading the shell, instead of focusing on the cheapest way to zero your sights.