Dan, I don't even own any bar stock. The W1 I use is 1 1/8" round. I have 2 1/4" round W2 and my 5160 is 1 inch square.
I have a 50 pound Little Giant, but I take my big stuff over to a friend's house who has a 500 and a 250 pound Chambersburg air driven power hammers. There, I knock my big stuff down to about .300" X 1 1/2" wide and bring it back home. With my 50#er and interchangeable spring dies I attach to the hammer, I draw those bars down, lengthen, flatten, thin, etc. I work each blade I made right out of the bar, in all directions, then draw out the tang and cut off.
there is incredibly little waste this way.
When it comes to actually shaping the blade profile and tapers, still, about 80% of the work is done by hand and hammer.
I have special quillotene dies I made for my anvil for forging in choils, forging intergals, etc.
Like Lin said, I can do anything I want with that piece of steel and I'm not restricted by the dimension of the bar stock.
I'm building a 30 ton press after the Blade Show which will eliminate the trips to my buddy's place. (Which he will probably enjoy!)