Hello Iron Quake,
Keep in mind that not all steels will work cold and have good results. In some cases warm forging will get the job done about 700 to 900 degrees F, with little scaling. In some cases you might have anneal the work before forging, this is case with cold rolled steel. Depend on your end product you can us header steel, this material will work cold with little problems.
Hope this helps.
Jim Riddle