Platform: PC
Description: This happens only in coop. I shoot at the fuel tank of a Runner with a .270 rifle - as usual. It explodes - as usual. Runner keeps walking - not as usual.
Checked with binoculars how much damage It received - less than 10 
Steps To Reproduce: Do the above while being a client.
Host or Client: Client
Players in your game: 2-4
Specifications: i5 4670K, 16G RAM, GTX 1070