On April 23, 1946, the Art Committee issued tactical and technical requirements for the design of a corps duplex consisting of 152- and 130-mm cannons on a single carriage, which should replace the 122-mm A-19 cannons, as well as the 152-mm ML-20 howitzers. Work on us was sanctioned by several resolutions of the Council of Ministers of the USSR, the first of which was Resolution No. 1540-687 of June 10, 1947. The developed samples were assigned the M-46 and M-47 indexes. The technical design by the Artillery Committee was reviewed on December 27, 1946, after processing, it was re-examined and approved on May 28, 1947.
Prototypes of the 130-mm M-46 cannon and the 152-mm M-47 cannon were manufactured in June 1948 by the plant number 172. After factory tests, the pipe from the M-46 and the prototype M-47 cannon were sent to the Scientific Test Artillery Range, where in the period from July to November 1948 competitive tests of the M-46 and S-69 cannons took place. The M-47 and M-46 barrels at the range were fired in turn from a single gun carriage (M-46). 1347 shots were fired from the M-46 barrel, 1319 shots were fired from the M-47. Also, a gun carriage with an M-46 barrel was tested by an AT-S carriage (during the carriage, with a barrel that was not transferred to the stowed position at a speed of 5 km / h). The total distance of the carriage was 2277 kilometers. After the elimination of structural deficiencies, at NIAP-e July 27 - November 14, 1949, repeated joint tests of artillery systems M-46, M-47 and S-69 were carried out, during which 1249 shots were fired from M-46, from M- 47 - 423 shots. Also, the M-46 was tested by carriage for 568 kilometers. Military tests of four guns M-46 and M-47 were carried out on September 9 - November 9, 1950, according to the results of which both systems were recognized as having successfully passed the tests. Subsequently, they were recommended for adoption.
The M-46 cannon is designed to combat heavy tanks and self-propelled artillery, mortars and enemy artillery, destroy defensive earthen structures, shell the enemy's rear to suppress tanks and manpower in the area of their concentration.
The developer is the design bureau of the plant # 172.
The prototype was made in 1950. The tests were carried out in 1950. It was put into service in 1953. Serial production was carried out from 1954 to 1957.
Ballistic data of the 130 mm M-46 cannon:
Maximum pressure of powder gases - 3150 kg / cm2;
Maximum muzzle velocity - 930 m / s;
Maximum firing range - 27, 15 thousand meters;
High-explosive fragmentation projectile weight - 33, 4 kg;
Full charge weight - 12, 9 kg.
Design data of the 130 mm M-46 cannon:
Barrel length including muzzle brake - 7600 mm;
Barrel length excluding muzzle brake - 7150 mm;
Caliber - 130 mm;
The number of grooves - 40;
Threaded part - 5860 mm;
Rifling stroke length - 30 calibers;
Rifling width - 6 mm;
Field width - 4.2 mm;
Depth of grooves - 2, 7 mm;
In the recoil brake, the amount of Steol-M fluid is 28, 7 liters;
Rollback length:
Short rollback length - 775 ± 40 mm;
Long rollback length - 1250 + 70 / -100 mm;
Rollback length to STOP - 1350 mm;
The amount of "Steol-M" liquid in the knob is 21.6 liters;
In the reel, the initial pressure is - 56 ± 2 kgf / cm2;
The greatest declination angle is -2 ° 30 ';
The greatest elevation angle is 45 °;
Horizontal guidance angle - 50 °;
The pressure in the columns at the minimum angle is about 44 kgf / cm2;
The pressure in the columns at the maximum angle is about 25 kgf / cm2;
Wheel width - 390 mm;
Wheel diameter - 1350 mm;
The height of the line of fire - 1380 mm;
Suspension stroke - 80 mm;
Stroke width - 2060 mm;
Panorama eyepiece height - 1490 mm;
Weight data of the 130 mm M-46 cannon:
Weight in the stowed position - about 8450 kg;
Weight in firing position - about 7700 kg;
Barrel and bolt weight - 2780 kg;
Oscillating part weight - 3880 kg;
Muzzle brake weight - 80, 5 kg;
Carriage wheel weight - 410 kg;
Front weight with packing - about 650 kg.
Overall dimensions of the 130 mm M-46 cannon:
Length in the stowed position - about 11730 mm;
Length in firing position - 11100 mm;
Width in the stowed position - 2450 mm;
Height along the trunk in the stowed position - 2550 mm;
Front clearance - 375 mm;
Carriage clearance - 400 mm.
Penetration of the 130-mm M-46 cannon when using the BR-482 armor-piercing tracer projectile (full charge, muzzle velocity 930 m / s):
The thickness of the pierced armor plate at a meeting angle of 60 degrees at a distance of 500 m is 205 mm; 1000 m - 195 mm; 1500 m - 185 mm; 2000 m - 170 mm; 3000 m - 145 mm; 4000 m - 120 mm;
The thickness of the pierced armor plate at a meeting angle of 90 degrees at a distance of 500 m is 250 mm; 1000 m - 240 mm; 1500 m - 225 mm; 2000 m - 210 mm; 3000 m - 180 mm; 4000 m - 150 mm.
