I am going to answer this two ways. Hollow points are always better regardless of the caliber in pistol or rifle Except when you have to attempt to shoot threw barriers or concealment.
If you wish to test this out legally go get a hunting license and shoot wild boar (were applicable)there in season year round in most states. I guarantee you with decent shot placment you can drop one with a 5.56 in one shot. There is a reason why most hunting laws require you to use HOLLOW points. SO you Kill what you shot not just wound it and have it die miles away from being gut shot and slowly bleeding out.