hmmm,I thought you might recognise the P&Y Newsletter mag. :D
I've given some of the heads away and altered others to be legal in NC, but
#280 is 2 5/8 x 1 3/8
#262 is 2 5/8 x 1 3/16 altered
#181 is 2 5/16 x 1 1/16 altered
#158 is 2 1/2 x 1 1/16 altered and is the one on the arrow.
#78 is smaller at 1 11/16 x 7/8
I also found some sawn obsidian preforms on ebay and have been learning to pressure flake with them.
I don't think I'm far away from knapping huntable heads but I've got a good bit to learn.