That probally would have to be the .50 cal. That's what is choosen by most snipers today and ontop of it, it is the largest caliber that a civilan can get ahold of. I mean sure there might be a longer shooting gun BUT a .50 cal is the only gun out there that does not need a armor peircing round. It is it's own armor piercing round. Matter of fact I don't even think there is a hollow point for a .50 cal.
I think the N-strike Long Shot or Long Strike
That is the National Shooting Sports Foundation. They promote shooting sports. Gun control attempts to prevent ownership of guns used in shooting sports. No gun= no shooting sports.
A shooting iron is a gun.
The question can't be answered without knowing what type of shooting and what "gun" you mean (hand gun, long gun, centerfire, rimfire, muzzle loader, etc..)
practice
by shooting it with a gun.
Depends on where the gun range is.
The Gatling gun.
Gun clubs, shooting ranges
Shooting solder at a special solder shooting range
One key difference between shotgun and rifle shooting techniques is the way the gun is held and aimed. In shotgun shooting, the gun is typically held at the hip and aimed using the shooter's peripheral vision, while in rifle shooting, the gun is held at the shoulder and aimed using the sights on the gun.
shooting it with anything is vandalism.