Blades and horseshoes??!!

[Pukka Bundook]

Any pounding and compacting of the iron shoe produced by the horse, would be compltely lost anyway, in the forging process.

You hear the same thing, re. stub-iron twist gun barrels, (barrels made from horseshoe nail stubs)...........The pounding makes a purer product therefore a higher quality barrel.
as above, lost in forging process,..... but a good source for nice pure iron!