Originally Posted by
Avery Arms
Pretty much just read the script and do what you are told, don't look directly at the cameras or giggle uncontrollably at the silly costumes and situations.
TV shows aside if you cannot obtain good ammunition or components you should be looking to replicate factory ammo as closely as possible. If you cut corners and try to load ammunition with poorly formed bullets, match heads and pliers to crimp the bullet in place you will have extremely poor quality, weak and unreliable ammunition that will be of little use in an emergency.
Construction of a usable bullet mold or sizing die is not complicated, if you can find a lathe or drill press it can be powered with a generator or rigged to anything that turns (water, gas, steam, treadmill, bicycle, hand crank) and used with a drill and reamer or in the case of a lathe a boring bar. You could also drill and ream your dies and molds with hand tools.
Primers can be reloaded or the cups and anvils can be formed or cut out of brass. You will have to have actual priming compound of which there are dozens of recipes using various chemicals. You will have to make or obtain the neccesary chemicals or else find an alternative such as match heads or toy caps but that still means finding a supply of strike anywhere matches or toy caps. These "alternatives" are not something you are likely to "find" in large quantity and they do not make good quality, reliable primers.
Powder would be guncotton, black powder, sweetener or epoxy based propellent depending on what is available.
Casings would be re-used, converted, drawn or turned depending on what tools and supplies are available. Without a lathe I doubt you will be able to make a suitable pistol or rifle casing but a paper shotgun shell with a metal base would probably be doable on a makeshift homemade lathe or drill press.
Blank cartridges (commonly available in UK/Europe with minimal restrictions) and industrial (hilti, ramset) powder actuated tool cartridges can and have been converted for firearm use. Rimfire tool cartridges can be converted to fire bullets in .22 firearms or installed off-center and used as primers in custom made centerfire cartridges.
Without commercial reloading tools and components 99.999% of the general public would never be able to make good quality ammunition and most would not even try. If you want to be in that .001% that actually would succeed you will actually have to learn what you are doing, learn to use the tools, chemicals etc. Most of the books directed towards amature "survivalists" making their own ammo (poor man's james bond, firefox, US army field expedient manual etc) are very lacking in technical know-how and really more intended to give the reader false confidence.
The old books by Authors such as Frost, Howe etc offer far better information as do a number of websites such such as castboolits and a number of others directed towards reloading, fireworks and rocketry.
Given limited time, resources and skills a very powerful arrow gun can be made from PVC pipe with a ball valve, it only takes about 75-100psi air pressure and you have more power than any modern bow or crossbow. Bows/crossbows are faster to reload but most people will not have the skills or the time and materials to build a really good one that is powerful and holds up.