Well I just happened to notice this thread and thought I would try and help out. I’ve been traveling or I would have hopped in earlier.
Below is a list of my Chiefs and their measured weights.
Chief (Black) 65.8
Chief(Gun Metal) 66.3
Chief (Grey) 66.5
Chief (Silver) 64.8
Chief (Nickel) 67.0
Chief (Blue) 66.0
Chief (Latitude 53) 65.2
Chief (Elliot Jackson) 65.2
Chief (Delirium Dive) 66.0
Chief (Custom Ano’d) 64.6
Chief (Ink Pot) 64.9
Chief (Ernest Kahn) 66.0
Chief (Electric Bacon) 65.8
Chief (Pink Dragon) 66.15
Chief (Pink w/Black Speckles) 66.1
Chief (Buffalo Bob) 65.0
Chief (Clareview Station) 65.9
Chief (Fire Chief) 66.6
Chief (Berry Berry) 66.0
Chief (Petr Kavka) 66.1
Chief (Blue/Gold) 65.0
Chief (Canadian Tuxedo) 65.8
Chief (Minty Mint) 64.9
Chief (7075 Hulk Smash) 68.5
Chief (Confetti) YYE 65.9
Chief (Grassy Lake) 65.1
Chief (Alec Campbell) 65.0
Chief (Yogi) 66.1
Chief (Dandelion) 65.2
Chief (Canadian Gothic) 65.9
Chief (Foxy Moss) 66.0
Chief (Hulk Smash Fade) 66.0
Chief (Pali Halloween Puffin) 66.4
Chief (Gold w/Grey Speckles) 66.1
Chief (28 Stories) 65.2
Chief (Zip Zop) 65.8
Chief (Rewind Edition) 66.0
Chief (Black w/Copper Splash) 65.9
Chief (Orange/Blue) 65.2
Chief (Pekka) 64.9
Chief (Black w/Pink Speckles) 65.1
Chief (7075 Black Bip Bop) 66.3
Hope this helps. 
Edit: The link for the photos of these Chiefs is: