No trouble, we all start somewhere and even regional common word usage varies, we just have to make sure we know what you mean.
The bullets should not slide into properly sized cases, no way, no how. If the cases were properly sized, the bullets would have to be MUCH too small for that to happen, which means that the most likely culprit, by far, is improperly sized cases.
What brand of sizing die do you use and how is it adjusted?
Still happily answering to the call-sign Peetza.
The problem, as you so eloquently put it, is choice.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.