Drank almost a full bottle of whiskey.

Drank almost a entire bottle of whiskey.

I’m 24 (m) 255 pounds and drank almost a entire bottle of fighting 69th whiskey. There is probably like two fingers worth left in the bottle and wanted to know how dangerous is this to do. I’ve only ever done it twice in my life and woke up feeling fine with a minimal headache. I’m not a certified whiskey drinker so wanted to know what’s a normal amount to drink in one night?