Hi Beretta 24
looks like you need to clean your magazine tube , as it collects large amount of residue inside it , a piece of which might be stuck at a location than makes it difficult for the magazine follower to pass & it gets stuck there .
It has nothing to do with the spring , besides , as njonesy said , a strong magazine spring is not needed , it just makes it harder to load the magazine & increases pressure on the magazine cap.
the magazine disassembly & cleaning will solve this problem .
Best wishes .