All FMJ or fully plated bullets get squished with linesman's pliers to cut the jacket on the side, or the tip gets cut off entirely.
I have heard of a few popping spectacularly and more lead than expected splattering more violently than expected. But, I've never seen it, personally, from a jacketed or plated bullet (a hail storm, yes, but that's another story). I've always cut the jacket/plating as a precaution.
I also usually give range lead anywhere from 6 months to more than a year to dry before it goes in my pot - which always starts cold for range lead. (Usually more like a year to a year and a half.)
The first time I melted some range lead down, the pile had been sitting in my garage for more than a month, in the middle of summer, and had been mined from a dirt embankment that hadn't seen water in over two months.
I still had sizzling, hissing, and visible steam coming from the pot...
It
should have been bone-dry, but there was, I assume, still water trapped inside some jackets. So, I give it plenty of time to dry, now. I haven't had an indications of moisture in the pot since going to the longer drying time.