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| Abbreviation | IBS |
|---|---|
| Official website | |
| internationalbenchrest | |
International Benchrest Shooters (IBS) is as a governing body for benchrest shooting that is mainly active in the USA. [1]
Competitions within IBS are divided into the categories Group which are benchrest disciplines, and Long Range which bears some resemblance to F-Class competitions. [2]
IBS uses several different target types for different distances and disciplines. [3]
In 2018, Mike Wilson shot a record setting 5-shot group measuring 1.068 in (27.1 mm) at 1,000 yd (910 m), which corresponds to an angular size of 0.102 moa or 0.029 mrad. The record was set shooting the 6mmBR Ackley Improved cartridge in good weather conditions, and the group was even centered in the X-ring. The IBS record from 2007 measured 1.397 in (35.5 mm), which corresponds to an angular size of 0.133 moa or 0.038 mrad. [4]
A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to 1/60 of one degree. Since one degree is 1/360 of a turn, one minute of arc is 1/21600 of a turn. The nautical mile was originally defined as a minute of latitude on a hypothetical spherical Earth so the actual Earth circumference is very near 21 600 nautical miles. A minute of arc is π/10800 of a radian.
Shooting sports is a collective group of competitive and recreational sporting activities involving proficiency tests of accuracy, precision and speed in shooting — the art of using various types of ranged weapons, mainly referring to man-portable guns and bows/crossbows.
A sniper rifle is a high-precision rifle designed for sniper missions. It serves to fulfill the tactical need for long range surveillance, effective anti-personnel and anti-materiel operations with a high hit probability, and can be used by military, law enforcement and civilian militias. The modern sniper rifle is a portable shoulder-fired weapon system with a choice between bolt-action or semi-automatic action, fitted with a telescopic sight for extreme accuracy and chambered for a high-ballistic performance centerfire cartridge.
A milliradian, often called a mil or mrad, is an SI derived unit for angular measurement which is defined as a thousandth of a radian. Mils are used in adjustment of firearm sights by adjusting the angle of the sight compared to the barrel. Mils are also used for comparing shot groupings, or to compare the difficulty of hitting different sized shooting targets at different distances. When using a scope with both mil adjustment and a reticle with mil markings, the shooter can use the reticle as a "ruler" to count the number of mils a shot was off target, which directly translates to the sight adjustment needed to hit the target with a follow up shot. Optics with mil markings in the reticle can also be used to make a range estimation of a known size target, or vice versa, to determine a target size if the distance is known, a practice called "milling".
Benchrest shooting is a shooting sport discipline in which high-precision rifles are shot at paper targets. The rifles ride on a front and rear rest sitting on a table or bench, hence the name "benchrest". The shooter simply sits at the bench, in distinction to other shooting disciplines, where the shooter holds and aims the rifle without the benefit of a rest. The post-Civil War era "double rest" rifles were one early form of "benchrest" rifles.
Stadiametric rangefinding, or the stadia method, is a technique of measuring distances with a telescopic instrument. The term stadia comes from a Greek unit of length Stadion which was the typical length of a sports stadium of the time. Stadiametric rangefinding is used for surveying and in the telescopic sights of firearms, artillery pieces, or tank guns, as well as some binoculars and other optics. It is still widely used in long-range military sniping, but in many professional applications it is being replaced with microwave, infrared, or laser rangefinding methods. Although much easier to use, electronic rangefinders can give away the shooter's position to a well-equipped adversary, and the need for accurate range estimation existed for much longer than electronic rangefinders small and rugged enough to be suitable for military use.
Fullbore Target Rifle (TR) is a precision rifle shooting sport governed by the International Confederation of Fullbore Rifle Associations (ICFRA). The sport evolved as a distinct British and Commonwealth of Nations discipline from Service rifle (SR) shooting in the late 1960s and is governed in the UK by the National Rifle Association of the United Kingdom.
The .30-378 Weatherby Magnum is a .30 caliber, belted, bottle-necked rifle cartridge. The cartridge was developed in response to a US Army military contract in 1959. While still unreleased to the public, the cartridge went on to set world records for accuracy including the first ten 10X in 1,000 yards (910 m) benchrest shooting. It is currently the highest velocity .30 caliber factory ammunition available.
The DSR-1 is a compact bolt-action rifle designed, manufactured and marketed by the German company DSR-Precision GmbH and was marketed also by the German company AMP Technical Services as a specialized sniper rifle for police sharpshooters. It has been adopted by the German GSG 9 counter-terrorist unit, as well as by other European special police units and agencies.
The Mad Minute was a pre-World War I bolt-action rifle speed shooting exercise used by British Army riflemen, using the Lee–Enfield service rifle. The exercise formally known as "Practice number 22, Rapid Fire, ‘The Musketry Regulations, Part I, 1909", required the rifleman to fire 15 rounds at a "Second Class Figure" target at 300 yd (270 m). The practice was described as; "Lying. Rifle to be loaded and 4 rounds in the magazine before the target appears. Loading to be from the pouch or bandolier by 5 rounds afterwards. One minute allowed". The practice was only one of the exercises from the annual classification shoot which was used to grade a soldier as a marksman, first-class or second-class shot, depending on the scores he had achieved. The rapid aimed fire of the ‘Mad Minute’ was accomplished by using a 'palming' method where the rifleman used the palm of his hand to work the bolt, and not his thumb and forefinger, while maintaining his cheek weld and line of sight.
The 6.5-284 Norma originated as a wildcat cartridge based on the .284 Winchester cartridge necked down to 6.5 mm.
The Precision Sniper Rifle (PSR) was a program by United States Special Operations Command to replace all bolt-action sniper rifles in use by United States special operations snipers with a single bolt-action rifle chambered for a large caliber Magnum chambering like .300 Win Mag, and .338 Lapua Magnum. The solicitation was placed on January 15, 2009. The contract was awarded to Remington Arms for their Modular Sniper Rifle as Mk 21 Precision Sniper Rifle
The Barrett MRAD or multi-role adaptive design is a bolt-action sniper rifle that was designed by Barrett to meet the requirements of the SOCOM PSR. The MRAD is based on the Barrett 98B with a number of modifications and improvements. The Barrett MRAD was named the 2012 Rifle of the Year by the NRA.
Steel targets are shooting targets made out of hardened (martensitic) steel, and are used in firearm and airgun sports such as silhouette shooting, cowboy action shooting, practical/dynamic shooting, long range shooting and field target, as well as recreational plinking. They are popular in both training and competitions because the shooter gets instant acoustic feedback on a successful impact, and can often also visually confirm hits by seeing the bullet getting pulverized, leaving a mark on the surface paint, or moving/knocking down the target. Hanging steel plates or self-resetting steel targets also have the advantage that the shooter do not need to go forward downrange to tape the targets, making it a good option for shooting ranges that otherwise have electronic targets. Steel targets also are weatherproof, contrary to paper targets, which do not hold up in rain and wind gusts.
Long range shooting is a collective term for shooting disciplines where the shooter has to engage targets at such long distances that he has to calculate ballistics, especially in regards to wind. While shooting at shorter or "regular" ranges, one usually has to adjust the sights only in regards to gravity but, when the range is extended, wind drift will be the first factor affecting precision to the extent that it must be taken into account. Some would argue that long range shooting starts where assessment of wind, distance, and various atmospheric conditions are equally important for the results as pure shooting skills - meaning that even if one conducts a technically perfect shot, the shooter will miss the target because of incorrect calculations, or forgetting to take some element into consideration. It is widely accepted within interdisciplinary circles that long range means the target is more than 600 meters away, while extreme long range is generally accepted as when the target distance is more than 1000 meters away from the shooter.
Stangskyting, literally Stang-Shooting named after Colonel Georg Stang (1858-1907), is a practical rifle competition popular in Norway where the shooter has two periods of 25 seconds to get as many hits as possible on a target at an unknown distance, with an unlimited number of rounds. Competitions in Norway are arranged by Det frivillige Skyttervesen.
In shooting sports, a shot grouping, or simply group, is the pattern of projectile impacts on a target from multiple shots taken in one shooting session. The tightness of the grouping is a measure of the precision of a weapon, and a measure of the shooter's consistency and skill. On the other hand, the grouping displacement is a measure of accuracy.
The World Benchrest Shooting Federation (WBSF) is the international governing body for benchrest shooting, with disciplines for both centerfire and rimfire ammunition. WBSF was formed in 2001.
The International Confederation of Fullbore Rifle Associations (ICFRA) is the international association for the fullbore target rifle shooting sports of Palma and F-Class, which are long range competitions shot at distances between 300 and 900 meters or 300 to 1,000 yards depending on the range. F-Class often shoot concurrently with the world's long-range Palma shooters and uses the same targets, except that the F-Class target has an extra half diameter inner ring. ICFRA seeks to standardize the competition rules for Palma and F-Class around the world. In competitions, wind reading skills are important, and in order to hit their targets competitors must sense wind direction and speed, and adjust their sights accordingly by applying knowledge and experience about wind drift's effect on the bullet. The World Long-Range Rifle Team Championships is hosted every four years, where the winner is awarded the Palma trophy.
The International T-Class Confederation (ITCC), founded in 2014, promotes the shooting sport of T-Class which is mainly focused on competitions with precision rifle systems for various short, medium and long range distances, which may either be known or unknown. Headquarters reside in Bulgaria, and for the purpose of promotion of the sport internationally the organization offers a ruleset which regulates the design and management of competitions.