Pierce gun

We repeat that the guns described above form only one end of the spectrum of particle sources. Others have large flat cathodes. Many are required to produce high currents and current densities, in which case we speak of space-charge flow these are the Pierce guns and PIGs (Pierce ion guns). 

If the angle of the focusing electrode against the axis of the electron beam is 67.5° and the anode is also tilted forward to produce a rectilinear flow, which is an electron flow parallel to the z axis in Fig. 6.16, then, such electron gun is termed the Pierce gun. 

Long-focus electron beam (evaporation) A high power electron gun that allows heating and evaporation by focusing an electron beam on the surface from a source that is a long distance away and without bending the electron beam. Example Pierce gun. See also Deflected electron beam. 

Another target of concern for gun control advocates is heavy. 50 caliber rifles, whose bullets can pierce light armored vehicles or puncture chemical storage tanks, perhaps causing a major fire or explosion. However, no such attacks have yet occurred, and it is uncertain whether single-shot heavy rifles would really be the choice of terrorists when weapons like car bombs are so easy to construct. 

The Gun Control Act of 1968 requires that firearms and ammunition manufacturers obtain a federal license and pay a fee of 50 per year for firearms manufacturers and 10 per year for ammunition makers unless the manufacturer makes destructive devices or armor-piercing ammunition, in which case the fee is 1,000 per year. 

Charles Schumer, Democratic senator from New York, former representative from the Ninth District of New York and veteran on the House Judiciary Committee, where he chaired the subcommittee on Crime and Criminal Justice. Schumer is a strong advocate for gun control who helped pass the Brady Bill he also advocates bans on armor-piercing ammunition and a limit on the number of guns a person may purchase or own without a special arsenal license. ... 

Their policies range from the permissive (all law-abiding adults) to the highly restrictive (must show a definite need), cop-killer bullet Term for armor-piercing ammunition popularized by gun control advocates. The term gets its name on the basis that it especially endangers police wearing bullet-proof vests, curios and relics Firearms that are at least 50 years old or that are considered (because of their scarcity, historical value, or unusual nature) to be collector s items. A federal firearms license (FFL) is required for interstate purchase of such firearms. 

Fuze, BD, M66A2 (and M66A1). Both are delay-action fuzes for use with.APC-T (armor-piercing capped-tracer) projectiles, the A2 in 76-mm guns, while A1 in both 75 and... 

An AMX chassis carries a turret equipped with two 30mm guns which fire HE or armor-piercing projectiles at a muzzle velocity of 32SOfps. Max range 8200 ft and rate of fire... 

There are also lightweight sabots which do not discard on leaving the gun but remain on the core. The so-called hypervelocity armor-piercing" (HVAP) projectiles are provided with such sabots. Because of the low total weight of such projectiles, " hyper velocity" (muzzle velocity of 3500 feet per second or more) is obtainable within allowable pressure of the gun tube. The velocity is rapidly lost, but at short ranges the projectile is effective against armor (Ref 3)... 

Dunn, B. W. (1860-1936). Colonel, US Ordnance Dept. Introduced Ammonium Pi-crate for loading AP (armor-piercing) projectiles. This expl became known as 11 Explosive D or 11 Dunnite . Col Dunn also constructed one of the modem impact test machines designed to determine sensi tiviry of expls by means other than an actual firing test so as not to risk destroying a gun if an explosive is too sensitive Refs 1) VanGelder Schlatter (1927), pp 373 942 2) Army Ordnance 16, 364 (May-... 

The high explosive in the shell must be so insensitive that it will tolerate the shock of setback without exploding. Trinitrotoluene (TNT) is generally considered to be satisfactory for all military purposes, except for armor-piercing shells. The explosive must be tightly packed within the shell. There must be no cavities, lest the setback cause the explosive to move violently across the gap and to explode prematurely while the shell is still within the barrel of the gun, or as is more likely, to pull away from the detonator and fail to be exploded by it. 

Arsol = trimethylene trinitrosamine 71 Artillerietreibmittel - gun powder 158 as dimethylhydrazine 99 ASTM = American Society for Testing Materials AT = anti-tank = armor piercing weapon... 

Tracer munitions are the most effective means of fire control for rapid firing small arms. When used in machine guns, they are belted in a predetermined sequence, depending on the mission, with ball rounds, incendiary rounds or armorpiercing rounds. More recently, the trend in 20-30mm rounds has been to accommodate combined armor-piercing-incendiary-tracer functions which has resulted in every round being a tracer ... 

The Only Magazine of Improvised Weaponry Silencers, Rockets, Mortars, Automatic Weapons, Bazookas, Armor Piercing Ammo and much more are easy to make at home with sirnple hand tools and the PMA. We don t print gun control sob stories, product reviews of 1000 rifles or mercenary fantasy tales only simple easy-to-understand articles on homemade weapons. All projects can be done In your own home workshop or even at the kitchen table. Most materials needed are available at the local hardware store or hobby shop, Each issue also contains Information or sources for gunparts, chemicals, books, tools, and other hard to find materials. iix14 236 pp. 

Second star composition. Take of saltpeter in fine and dry flour ten ounces, of charcoal, of sulfur, of powder (gun-pow der), of antimony (sulfide), and of camphor each two frcscottx. Temper the whole with oil of turpentine, and make it into a powdery (mealy) paste w hich you will put into little cartridges and.you wdll load them in the same manner as rockets [that is, by pounding in the charge]. When you wish to use them, it is necessary to remove the paper wrapper and to cut them into pieces setting a little black match (m che d estoupin) in the middle (of each piece) through a little hole which you will pierce there. 

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