Why gun barrels are rifled

They can be made by cutting, button or even hammer-forging. However, the latter IMO, would be pointless as it leaves stresses in the barrel. Anything gained by using 5R rifling, is then subsequently lost.

Why gun barrels are rifled

Origins[ edit ] When slugs are fired in a standard, choked barrel, the slug is deformed by the choke as it exits. The degree of deformation is most acute with fuller chokes, which were among the most widely used in stock shotguns up until about Early shotgun slugs were "rifled" with deformable fins cast into the outside of the soft lead slug, which allowed the slug to swage down to fit the choke.

With an open choke, the reduction in diameter is minimal, so accuracy does not suffer much; tighter chokes, however, deform the slug enough to impact accuracy significantly, and the impact of the slug on the choke at velocities around meters per second feet per second could also stretch the barrel with repeated firings.

The first slug barrels[ edit ] The first slug barrels were cylinder bore barrels no choke outfitted with rifle sights, which are far better suited to accurate shooting of still targets than the standard bead sight used for shooting small, moving targets with shotshells.

Most pump-action and semi-automatic shotguns have barrels that can easily be changed in under a minute without tools, so having more than one barrel for a single shotgun is common[ citation needed ].

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With the addition of a slug barrel, the standard shotgun used for bird huntingskeet or trap shooting can then be used for hunting large game, such as deer at ranges of over meters yards. The rifled slug barrel[ edit ] The next step was the fully rifled shotgun barrel by Hastings, a manufacturer of aftermarket shotgun barrels.

Hasting's Paradox shotgun barrels were offered as aftermarket replacements for the most common brands of pump and semi-automatic shotguns and they quickly became popular with slug shooters. They chose the name "Paradox" because shotguns are defined by their smoothbore barrels, and a "rifled shotgun" was something of a contradiction in terms.

A BATFE ruling was obtained stating that a firearm designed to fire shotgun shells that was converted to fire shotgun slugs with the addition of a rifled barrel was still a shotgun, and thus not a destructive device. Now many manufacturers offer shotguns for sale with rifled barrels already installed.

Bolt action and single shot break-open designs are particularly accurate, and with modern saboted slugs designed for use only with rifled barrels, the modern slug gun offers nearly the accuracy of a typical rifle.

New slug technology[ edit ] The widespread availability of rifled shotgun barrels was quickly followed by the introduction of special slugs designed for use with the rifled barrels.

Why gun barrels are rifled

The short, fat, unaerodynamic Foster slug was no longer needed for its inherent stability; new slugs were smaller in diameter, usually The saboted slug had half the frontal area of the old slugs, which translated to half the drag, and double the penetration. Lighter, faster slugs were also possible, allowing for a flatter trajectory and longer range.

With the wide selection of barrels, shotshells and slugs, the modern shotgun is a tremendously versatile tool. Shotgun slugs for safety[ edit ] While shotgun slugs were originally developed as a convenience to the hunter who already owned a shotgun and did not want to purchase a rifle for hunting gameheavily populated areas now allow large game hunting only with shotguns.

The limited range of the slow, fat slug—even a saboted slug—compared to a rifle bullet offers a safety advantage by limiting the maximum range.

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While buckshot is capable of taking deer-sized game, it is only effective at short ranges, generally under 50 yards 46 meters. A properly selected barrel and slug load can triple that range.We get the polygonal rifling question quite a bit.

Why does it matter? What is it? Should I care? So here's our response! But the best quality about Zev barrels isn’t their flashy appearance or ability to spit out lead bullets, it’s the improved durability that comes with the pre-hardened stainless steel barrel.

Hammer forged barrels do not have a very visible presence in the accurate gun world, so I will confine this discussion as to the relative merits of cut versus button rifled barrels.

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If it is so easy to rifle barrels using a button, why do some barrel makers persist in the difficult, time consuming art of cut rifling?

May 14,  · there are special rifled barrels available for use with slugs. Firing shot out of a rifled barrel results in wider groups, as the rifling spreads the shot out. see webkandii.com: Resolved.

It is a Remington , set up with a inch rifled slug barrel and a X 5 power scope for deer hunting.

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He also has a 28 inch barrel with an Improved Cylinder choke that we will use today. Modern manufactured pistol barrels are rifled they have “lands” and “groves” just like a “rifled” rifle barrel.

This assists in bullet stabilization and which in turn assists in accuracy of the round fired.

Rifling - Wikipedia