I heard about a much cheaper way of fireforming rifle brass: use a pistol primer, then fill the case to only 10% of its capacity with a very fast-burning pistol powder, then stuff a small wad of toilet-paper down it, and fill the rest of the way with cornmeal, or something granular like that. Seal it off with a blob of bullet lube, and load them individually into the rifle while it's standing straight up...then just fire it straight up.
#1. has anybody tried this?
#2. would this neck the case up, also? For instance, using this method, could I just stick 30-06 brass into a rifle chambered for 338-06, and end up with perfect 338-06 brass, without any manual resizing?