Question: The MS-74 was based on a military rifle whose inception was in what year?

Context paragraphs:
M1819 Hall rifle: The M1819 Hall rifle was a single-shot breech-loading rifle (also considered something of a hybrid breech and muzzle-loading design) designed by John Hancock Hall, patented on May 21, 1811, and adopted by the U.S. Army in 1819.  It was preceded by the Harpers Ferry Model 1803.  It used a pivoting chamber breech design and was made with either flintlock or percussion cap ignition systems.  The main years of production were from the 1820s to the 1830s at the Harpers Ferry Arsenal.  This was the first breech-loading rifle to be adopted in large numbers by any nation's army, but not the first breech-loading military rifle – the Ferguson rifle was used briefly by the British Army in the American Revolutionary War.  Breech-loading rifles remained overshadowed by common muskets and muzzleloading rifles (more often rifle-muskets) so prevalent in the early 19th century.  The early flintlocks were mostly converted to percussion ignition.

Lars Jørgen Madsen: Lars Jørgen Madsen (19 July 1871 – 1 April 1925) was a Danish rifle shooter who competed in the early 20th century in rifle shooting.  He participated in Shooting at the 1900 Summer Olympics in Paris and won a gold medal in the Military Rifle standing.  Twenty years later, he won another gold, in the Military Rifle Team event.  He was one of only 3 Danish competitors to win five Olympic medals.  He also competed at the 1908, 1912 and 1924 Summer Olympics.

8×50mmR Lebel: The 8×50mmR Lebel (8mm Lebel) (designated as the 8 × 51 R Lebel by the C.I.P.) rifle cartridge was the first smokeless powder cartridge to be made and adopted by any country.  It was introduced by France in 1886.  Formed by necking down the 11mm Gras black powder cartridge, the smokeless 8 mm Lebel cartridge started a revolution in military rifle ammunition.  Standard 8mm Lebel military ammunition was also the first rifle ammunition to feature a spitzer boat tail bullet (Balle D), which was adopted in 1898.  The long-range ballistic performance of the 8mm Lebel bullet itself was exceptional.  For use in the magazine tube-fed early Lebel rifle, the 8mm case was designed to protect against accidental percussion inside the tube magazine by a circular groove around the primer cup which caught the tip of the following pointed bullet.  However, the shape of its rimmed bottle-necked case, having been designed for the Lebel rifle's tube magazine, also precluded truly efficient vertical stacking inside a vertical magazine.  The bolt thrust of the 8mm Lebel is relatively high compared to many other service rounds used in the early 20th century.  Although it was once revolutionary, the 8mm Lebel was declared obsolete after World War I and was soon after replaced with the 7.5×54mm French round.

Browning BAR: The Browning BAR is a gas-operated, semi-automatic rifle produced by the Browning Arms Company in Belgium.  The rifle loads from a box magazine detachable from a hinged floor plate.  This rifle should not be confused with the M1918 military rifle, which is a completely different design, sharing no parts, though also referred to as the BAR.  Browning introduced a redesigned BAR in 1966.

MS-74: MS-74 (№74 Factory's Modernised" Sniper rifle ") was a limited edition Soviet sniper rifle, made by Yevgeny Dragunov in 1949 at Izhevsk Machinebuilding Plant.  The weapon was based on Mosin's rifle with 7.62×54mmR cartridge.  The main aim was to increase accuracy and improve the comfort.  It was tested and recommended for use.

Mosin–Nagant: The 3-line rifle M1891 (Russian: "трёхлинейная винтовка образца 1891 года" ), colloquially known as Mosin–Nagant (Russian: Винтовка Мосина , ISO 9: "Vintovka Mosina" ) is a five-shot, bolt-action, internal magazine–fed, military rifle developed by the Imperial Russian Army from 1882 to 1891, and used by the armed forces of the Russian Empire, the Soviet Union and various other nations.  It is one of the most mass-produced military bolt-action rifles in history with over 37 million units having been made since its inception in 1891, and, in spite of its age, it has been used in various conflicts around the world even up to the modern day.

Improved Military Rifle: Improved military rifle propellants are tubular nitrocellulose propellants evolved from World War I through World War II for loading military and commercial ammunition and sold to civilians for reloading rifle ammunition for hunting and target shooting.  These propellants were DuPont modifications of United States artillery propellants.  DuPont miniaturized the large artillery grains to form military rifle propellants suitable for use in small arms.  These were improved during the first world war to be more efficient in rimless military cartridges replacing earlier rimmed rifle cartridges.  Four-digit numbers identified experimental propellants, and a few successful varieties warranted extensive production by several manufacturers.  Some were used almost exclusively for military contracts, or commercial ammunition production, but a few have been distributed for civilian use in handloading.  Improved military rifle propellants are coated with dinitrotoluene (DNT) to slow initial burning and graphite to minimize static electricity during blending and loading.  They contain 0.6% diphenylamine as a stabilizer and 1% potassium sulfate to reduce muzzle flash.

Østen Østensen: Østen Østensen (12 August 1878 – 22 December 1939) was a Norwegian rifle shooter competing in the early 20th century.  He won three Olympic silver medals and two bronze medals.  His first medal was a silver medal in team, free rifle at the 1912 Summer Olympics in Stockholm.  At the 1920 Summer Olympics in Antwerp he won silver medals for team, free rifle and team, military rifle, 300 + 600 m and bronze medals in free rifle, three positions and team, small bore rifle.

Emil Kellenberger: Emil Kellenberger (3 April 1864 - 20 November 1943) was a Swiss sports shooter who competed in the early 20th century in rifle shooting.  He participated in Shooting at the 1900 Summer Olympics in Paris and won three olympic medals, two gold medals in the Military Rifle 3 positions and team categories and a silver medal in the Military Rifle (kneeling).  However his silver medal was tied with the Danish shooter Anders Peter Nielsen.

Madsen M47: The Madsen Lightweight Military Rifle (or the Madsen Lightweight Military Rifle Model 1947; commonly abbreviated as M47) is a Danish bolt-action rifle designed to be chambered for a wide range of contemporary military cartridges.  The M47 was the last bolt-action rifle designed with the intention of being general issue to infantry troops.  The M47 was first available for purchase in 1951, primarily marketed to countries which could not afford semi-automatic rifles for their militaries.  However, with the unprecedented availability of low-cost surplus small arms and the rapid proliferation of self-loading rifles after World War II, global demand for such a rifle was very low and the M47 received very little commercial interest.

Supporting paragraphs: MS-74 Mosin–Nagant
Answer: 1891