Would UV Rounds and Silver Nitrate Rounds be effective on vampires/werewolves?

I’m running a campaign in Vampire: The Masquerade, and I wanted to give the players these two types of ammo (UV Rounds and Silver Nitrate Rounds). Would these two have any effect on the supernatural beings, or are they incompatible with the World of Darkness setting?

Note: These come from the Underworld universe. I don’t want to give the player an instant killer, but an affordable way to use guns in the World of Darkness. By affordable I mean that their use become more usual than bladed weapons, as long as guns don’t deal lethal damage to vampires.