I watched a program the other night on Wild TV...the host went to the Federal Ammunition plant....The building alone had to be a km long !!! Newest technology working right along side of the machines from the 30's and 40's which are still going and are an integral part of their business.
For just the shotgun manufacturing section, They have about 7 or 8 huge silos outside (that's all I saw...likely more) filled with the tiny plastic pellets....these are fed into the heating / melting unit and come out as nearly solid plastic tubes maybe 10 inches long with a 1/4 inch hole in the middle...these then go into an extruder and are heated and pulled along to thin it out to make the hulls of the shotshells.....the opposite end of this extruding line alone is almost 200 yds long !!! The starting point the plastic is barely moving as it's being stretched...on the opposite cut off end the plastic is being chopped ...several every second !!
Showed the rifle bullet making section as well as the rimfire section too...gigantic rolls of brass for case heads and 22 shells being stamped and forged out...really fascinating and interesting !! Almost as much noise and commotion there as there is in my head sometimes...lol
They're more than a billion orders behind !!!!!!!!!!!!!!!...as of that taping !