..It was a fun journey, and I did find the Bushman, which I think, is pretty close to the Raiders block. I was just waiting to find a vintage dark brown one on ebay, with a factory telescope, probably called something beside a Bushman. The "chinstrap grommet" theory really had me convinced. --- Anyway, here's what I got from Screenused's Holy Grail Hat. - 4 1/4 inch front pinch confirmed. Front and rear crown lowering confirmed. Ribbon tighter than I thought. ....... Here's a You Tube video of my new "Screenused Replica" hat. http://www.youtube.com/watch?v=TF8LukW1M3M&feature=user...... ................... ........................................ ....... So here's my 4 1/4 inch front pinch.
Even though I sanded this hat about 1/3 thinner, I still had to glue this super low peak in. Felt is too springy these days. Vintage HJ felt is like a sheet of wet clay- stays where you put it. This low peak gives me the super deep top bash that I know the Raiders hat has. This was the main reason I had any doubt about the Bushman being the Hat- It just doesn't want to dent this deep, while the Federation does. I was thinking there was a missing link between the Bushman and Federation, but the Bushman can do it- with a lot of effort. 
Then I transitioned the crown into brim a bit over a quarter inch in front, which means I had to move the sweat up into the crown. I don't think the Raiders hat just "relaxed" this much. Note that the widest portion is where the front was before the hat was turned. This completely explains the "dimensional cut, as far as I'm concerned. My hat is an even 2 3/4 brim all around before lowering, and now has a dimensional shape. 
The rear is lowered a bit too in the same way- you can see where the sweat stitching ends. 
The back of the Raiders hat may have "relaxed", but my sweat is sewn in at the brim break, and had to be moved up in back. ------- Another thing about Screenused's hat, I thought "tightened ribbon" when I saw it. I tighten my ribbons, but too much flattens the front pinch- so, I tightened my ribbon more in the back than the front on this hat, and you can see the crown bulging over the ribbon to the rear of the bow in my video. ---------------------------------------------------- -----------One more thing about Screenused's- It again confirms for me that it was a telescope crown hat. Note the point where it caves in on the top, rear, where a telescope crease would be. 
In case you skipped the video, here's the link again- http://www.youtube.com/watch?v=TF8LukW1M3M&feature=user
....... Dutch-jones said 
Looks like it's in about the same place. 
.....GCR, it's a size 58 ..