Huben k1 25 cal slug options

Ok guys what brand and weight of slug shold i try in my K1 25 cal? Also what’s mold would be recommended if i want to make my own
thakns
I have heard these are the best slugs for the Huben. https://www.mp-molds.com/product/635-mm-air-rifle-pellet-8-cav-mold/?currency=USD

If you don’t want to cast them yourself you can buy them from Dale at Varmint Knockers. He is really knowledgeable and knows a lot about the Huber k1s and can get you the best slug for your gun.