No guns or ammo
Companies that make firearms, ammunition, and components of ammo.
Bob Milek was a renowned firearms writer and editor who contributed to several gun magazines such as "Guns & Ammo" and "Handguns." He wrote on topics related to firearms, shooting techniques, and gunsmithing. Milek was known for his expertise in the field of firearms and his precise and detailed writing style.
There are several auction sites on the net that cater to firearms sales and products for firearms. Check these auctions for the ammo you need. Once you get the loaded ammo for your rifle, start reloading. You can also buy reloading equipment used from these sites or on Craigslist. If you have never reloaded you can watch videos on You-tube about the equipment you'll need and the steps to take. Later, you'll probibly want to get a chronograph so you can see how fast your reloads are running. That info will tell you want you want to know regarding your trajectory and bullet drop over distance.
Stovepiping due to loose handling (limp wristing) of the firearm, use of poor quality ammo (particularly, poorly done reloads and use of cheap ammo in firearms which are picky about ammo), poor maintenance of the firearm, incorrect assembly of firearms built from components or parts kits.
Liquid, Ammo, Casualties, Equipment
Only in firearms chambered for it. SIG comes to mind, but, there are others.
Federal law states that it is illegal for a felon to posses firearms or ammunition.
Whether you do or not depends on where you live. As for countries not requiring a licence to buy .22 ammo, the United States is one.
No, Federal law prevents a convicted felon from possessing firearms or ammunition.
http://ag.ca.gov/firearms/forms/pdf/Cfl2007.pdf
Your question is extremely broad, and needs to be more specific to get a good answer. However, range activities will need to be tailored to the personnel, ammo, equipment, and actions that are planned.