Generally there is a method of selecting the order in which the barrels of an SST shotgun fire ; commonly this is done through manipulation of the safety, pushing to one side to select top barrel first and the other side to select bottom barrel first.

Using the method often portrayed in movies and television of flipping the cylinder open and closed with a flick of the wrist can in fact cause the crane to bend over time, throwing the cylinder out of alignment with the barrel.

The first method, called a " gas piston ," uses the high pressure gas ported from the barrel to drive an enclosed piston back against an operating rod or linkage ( they are often one piece ), which in turn unlocks the bolt and drives it rearward, ejecting the spent case and cocking the hammer or striker spring.

An alternative method is to insert an armed thermite grenade down the muzzle of the artillery piece, fouling the barrel and making the weapon very dangerous to fire.

Later developments rendered this method of priming unnecessary, as, in loading, a portion of the charge of powder passed from the barrel through the vent into the pan, where it was held by the cover and hammer.

The first and traditionally most common method expresses the twist rate in the length required to complete one full projectile revolution in the rifled barrel.

Another simple method is porting, where holes or slots are machined in the barrel near the muzzle to allow the gas to escape.

In this method when the sights were on the target, the barrel was pointed at the target's future position.

A simple method involves a single barrel at the bottom of a downspout, while a more complex method involves multiple tanks.

The MG 42 was ill-suited for internal / coaxial mounting due to the method of barrel change.

It was also found that the repeated launching of grenades by this method caused damage to a rifle ’ s barrel.

Due to the traditional barrel's distinctive shape and construction method, the term has been used to describe a variety of other related or similar objects, such as the gun barrel ( with the term growing out of the fact that early cannon were built from staves of metal hooped together, similar to a barrel ) and barrel organ.

* One variant of the barrel pillory, or Spanish mantle, torture method is quite similar.

The 10 / 22 barrel uses a unique attachment method where the barrel is screwed rather than pinned into the frame ( the barrel is not threaded, but attachment involves two screws ), making removal and replacement of the barrel ( which would require a gunsmith's work with most other rifles ) very easy.

The reason the quick kill method works is that the shooter learns to sight above the barrel, rather than along the barrel.

This method is preferable because it allows more movement in the gun, as the laser dot will not move relative to the barrel, and is a method of boresighting which does not require the removal of the bolt.

One simple method of measuring the expansion of the heart is to tie a thin rubber tube, filled with mercury, around the heart and record the change in resistance as the tube is stretched.

Why should the `` practical adhesion '' of a coating as assessed by a knife method change, initially increasing rather rapidly and then decreasing stepwise to very low values as the knife is forced through a coating of increasing thickness??

Another rules change that affected Ruth was the method used by umpires to judge potential home runs when the batted ball left the field near a foul pole.

This version of rasterization has overtaken the old method as it allows the graphics to flow without complicated textures ( a rasterized image when used face by face tends to have a very block-like effect if not covered in complex textures ; the faces are not smooth because there is no gradual color change from one primitive to the next ).

Clark also developed a method of rapidly spinning into his costume at super speed which became a trademark change, especially during the third and fourth seasons of the series, and extremely popular with the show's fans.

Differentiation is a method to compute the rate at which a dependent output y changes with respect to the change in the independent input x.

If the function f is not linear ( i. e. its graph is not a straight line ), however, then the change in y divided by the change in x varies: differentiation is a method to find an exact value for this rate of change at any given value of x.

The exact period when the hinge was substituted is not quite known, but the change apparently brought about another method of strengthening and decorating doors, viz, with wrought-iron bands of infinite varieties of design.

The dialectical aspect retains the Hegelian method within this materialist framework, and emphasizes the process of historical change arising from contradiction and class struggle based in a particular social context.

Under this model, the method of ending hyperinflation is to change the backing of the currency, often by issuing a completely new one.

The main method the unions used to effect change was strike action.

Friedrich Engels noted: " Without a previous social revolution the abolition of the state is nonsense ; the abolition of capital is in itself the social revolution and involves a change in the whole method of production.

In his textbooks he selected Indo-European examples that supported the key Neogrammarian hypothesis of the regularity of sound change, and emphasized a sequence of steps essential to success in comparative work: ( a ) appropriate data in the form of texts which must be studied intensively and analysed ; ( b ) application of the comparative method ; ( c ) reconstruction of proto-forms.

Tantra is at the same time a method of psychoanalysis, a way of integrating the body, mind and spirit, and a way of using the mind or will to cause change in one's external situations and circumstances, hence " magic ".

Generally, an excimer laser is designed to operate with a specific gas mixture ; therefore, changing wavelength is not a trivial matter, as the method of generating the new wavelength is completely different, and the absorption characteristics of materials change.

Punctuated equilibrium in social theory is a method of understanding change in complex social systems, particularly how policy change and the development of conflicts seem to progress in extended periods of stasis, punctuated by sudden shifts in radical change.

The optimal method for keeping average freshness high includes ignoring the pages that change too often, and the optimal for keeping average age low is to use access frequencies that monotonically ( and sub-linearly ) increase with the rate of change of each page.

After repeatedly downloading pages, a change rate is inferred for each page and a non-linear programming method must be used to solve the equation system for maximizing freshness.

Meteorological winter is the method of measuring the winter season used by meteorologists based on " sensible weather patterns " for record keeping purposes, so the start of meteorological winter can change depending on how far north one lives.

The most common method is to measure lamellar growth rings in bones and teeth — each ring corresponds to a change in growth rate which typically occurs once a year between dry and wet seasons.

Since a Skeletal Age rating can be made at any age during growth, from Elbow, Shoulder, Knee, or Foot as well as Hand, it seems to be the method of choice when one wishes to study most aspects of skeletal developmental progress during childhood.

If the symbolic name or actual address of an index word or electronic switch appears or is included in the operand of an XRELEASE or SRELEASE statement ( see page 101 ), the specified index word or electronic switch will again be made available, regardless of the method by which it was reserved.

This test method is intended for determining the dimensional changes of woven or knitted fabrics, made of fibers other than wool, to be expected when the cloth is subjected to laundering procedures commonly used in the commercial laundry and the home.

Much of Alzheimer's later work on brain pathology made use of Nissl's method of silver staining of the histological sections.

The discovery and elucidation of aberration is now regarded as a classic case of the application of scientific method, in which observations are made to test a theory, but unexpected results are sometimes obtained that in turn lead to new discoveries.

Most structural bricks are made by this method, as it produces hard, dense bricks, and suitable dies can produce holes or other perforations.

However, this method of designing custom CPUs for a particular application has largely given way to the development of mass-produced processors that are made for many purposes.

In the 20th century Michel Foucault in Discipline and Punish made a study of criminalization as a coercive method of state control.

By regulating the processing parameters — especially the gases introduced, but also including the pressure the system is operated under, the temperature of the diamond, and the method of generating plasma — many different materials that can be considered diamond can be made.

While most crochet is made with a hook, there is also a method of crocheting with a knitting loom.

That is, the mechanism by which the measurement is made is different ; each method is dependent on an unrelated natural phenomenon.

Certain drawing methods or approaches, such as " doodling ," other informal kinds of drawing, and the surrealist method of " entopic graphomania ", in which dots are made at the sites of impurities in a blank sheet of paper, and lines are then made between the dots, may or may not be considered part of " drawing " as a " fine art ".

Beardsworth here explains that it would be irresponsible to undertake a deconstruction with a complete set of rules that need only be applied as a method to the object of deconstruction because this understanding would reduce deconstruction to a thesis of the reader that the text is then made to fit.

Ethologists have made much more use of a truly comparative method than comparative psychologists have.

The first confirmed discovery of an extrasolar planet was made using this method.

Although posterity suspected him of Arianism, Eusebius had made himself indispensable by his method of authorship ; his comprehensive and careful excerpts from original sources saved his successors the painstaking labor of original research.

1520 – 1591 ), father of Galileo and the inventor of monody, made use of the method in successfully solving musical problems, firstly, of tuning such as the relationship of pitch to string tension and mass in stringed instruments, and to volume of air in wind instruments ; and secondly to composition, by his various suggestions to composers in his Dialogo della musica antica e moderna ( Florence, 1581 ).

Several British films made in the first half of 1903 extended the chase method of film construction.

The method of transmitting sound resonance to the cone is either a " biscuit " bridge, made of a small piece of hardwood at the vertex of the cone ( Nationals ), or a " spider " bridge, made of metal and mounted around the rim of the ( inverted ) cone ( Dobros ).

As part of this effort, he made key contributions to the modern rigorous and systematic treatment of the method of mathematical induction.

This was a part of the overall effort being made in Broken Hill to devise a practical and profitable method to use the newly developed froth flotation process to treat these tailings and recover the zinc.

They hypothesized that the method may have involved impressing simple shapes to create alphabets in " cuneiform " style in a matrix made of some soft material, perhaps sand.

Watt started to develop the process in 1779, and made many experiments to formulate the ink, select the thin paper, to devise a method for wetting the special thin paper, and to make a press suitable for applying the correct pressure to effect the transfer.