for each gun. One barrel was completed in December 1953 for evaluation purposes after the ships were canceled earlier that year. The 130-mm 58-caliber guns were also a new design. They were to be fitted in a new twin-gun BL-109A dual-purpose mount. Each individual gun weighed and the complete turret weighed . The guns in this mount could depress to −8° and elevate to 83° at a rate of 20° a second. Traverse speed was 20° per second. The guns fired shells at a muzzle velocity of to a maximum horizontal range of using of propellant. Their rate of fire was 15 rounds per minute and 200 rounds were stowed for each gun. Twenty-four 78-caliber light anti-aircraft guns were to be carried by the Stalingrads in six quadruple SM-20-ZIF power-driven, fully enclosed mounts. Two mounts were fitted on each side of the forward funnel and the last two were superimposed above the rear main gun turret. Each individual gun weighed and the complete mount weighed . The guns in this mount could depress to −13° and elevate to 85° at a rate of 25° a second. Traverse speed was 30° per second. The gun fired shells at a muzzle velocity of to a maximum horizontal range of . Its rate of fire was 75 rounds per minute and 800 rounds were carried for each gun. Forty 79-caliber AA guns were carried in ten quadruple powered BL-120 mounts. These were designed especially for the Stalingrads and were fully, if lightly, armored against splinters. Each individual gun weighed and the complete mount weighed . The guns in this mount could depress to −5° and elevate to 90° at a rate of 25° a second. Traverse speed was 70° per second. The gun fired shells at a muzzle velocity of to a maximum effective range of . Its effective rate of fire was 240 rounds per minute and 1200 rounds were carried for each gun. Electronics Target data for the More-82 director was derived from the Zalp (NATO designation Half Bow) fire-control radar and Grot rangefinding radars mounted on turrets Nos. 2 and 3. These were backed up by a single KDP-8-10 optical director mount fitted with and rangefinders. Some of the BL-109A mounts were to fitted for range-finding radars, probably Shtag-B (NATO designation Egg Cup), but they were ordinarily controlled by three SPN-500 directors, one for each pair of gun mounts. The