It's for my science homework, I've read it on a few other sites but I couldn't understand them fullyCan somebody explain it simply?
A magnet will tell if there is steelUsually the concern is only for steel in the projectile, not the caseIndoor ranges are worried about damage to their back stopOutdoor ranges may be concerned about starting fires due to sparksIf a range told me the cases could not be steel or aluminum, I would find another rangeThey probably want to keep the shells you leave on the ground, but don't want to have to separate the reloadable from the non-relaodableThat makes them bums.
Brand would helpIncluding aluminum tends to imply that the case construction is all that you are worried aboutThere are three common materials that cases are made from, aluminum, brass, and steelIf the case is clearly brass colored without a coating on it, it is brassIf it is a silvery metal, it is definitely aluminum, unless it is polished shiny, in which it would be a nickel plated brass caseSteel cases can be hard to determine visuallyMany times they are coated with zinc, copper wash, other metals or lacquerIf a magnet will attract the case, it is steel, or at least definitely not brassThe range may be worried about steel core bulletsIf a magnet will attract the bullet, it is steel cored.
How simple do you want it? In very simple terms: Aluminium is extracted from its main ore, bauxite (an oxide of aluminium)To do this, the ore is first mixed with another ore called cryolite (another compound containing aluminium) and the mixture is heated until it is moltenThe presence of the cryolite is to lower the temperature at which the bauxite melts, thus making extraction cheaper because less energy is requiredOnce the mixture is molten, an electric current is passed through it, causing the aluminium ions in the mixture to gain electrons (i.ebe reduced) to form aluminium metal, which floats to the top of the mixture and is collected.
First - the only ranges that care - are indoor rangesAnd 99.99999% of them do not allow 308 rifle caliber fired indoors!! Second - the range does not care what the case is made out of - they are caring about what the bullet is made out ofMost lead bullets are soft and do not hurt a backstop - steel ones doYou should have included the name of the range - we could have helped you more.
You mean casingsYou can tell as steel will have a coating of lacquer and aluminum will look like aluminumThe bullet itself will always be lead with a copper coat unless otherwise specified.
