Pellets VS Slugs

Hi Everyone,

I am relatively new to higher end PCP air rifles. I just purchase a couple rifles, being the Edgun Leshiy 2 Badger and LCS SK-19.
I've been reading about slugs vs regular pellets. Here's my question. Is something special required to shoot slugs in a regular rifle, such as a barrel change or pressure adjustments on the rifle?

Thanks in advance