I am under the impression that rifiling dose make your projectile go further.(???)
Rifling - Wikipedia, the free encyclopedia
Video of a Rifled barrel......
[ame=http://www.youtube.com/watch?v=ZkR9YLU7eAU&feature=related]YouTube - Rifling[/ame]
Most shot guns do not have rifiling.They are a smooth bore gun,and only fire at short ranges.
Tavarisch your comment of a bullet like an american football is spot on.To add ,the further the ball is thrown over a distance,it (the ball)will drop.Basically the bullet will have gravity working against it.E.G..If you shoot at 100meters your bullet may drop 1cm,at 200 meters your bullet may drop 2cm,at 600 meters you bullet may drop 10cm.Add wind into the equation and that is where the Art of shooting comes into play.
some good videos on AK vs M16,watch the AK barrel deform:eek
[ame=http://www.youtube.com/watch?v=G6BpI3xD6h0]YouTube - AK 47 vs M16[/ame]
Here is how a M16 works...animated
[ame="http://www.youtube.com/watch?v=WSqYvWib1og&feature=related"]YouTube - AR-15/M-16 Function Animation[/ame]
Just type in AK Vs M16 in youtube ba11istics,you will be watchin all night
Regards