The M72 was replaced by the 6.63 kg (14.62 lb) M61 armor-piercing ballistic capped high explosive with tracer (APCBC-HE-T) shell. The blunt armor-piercing cap, made of a softer metal, helped to prevent shell shatter at higher velocities and against sloped and face-hardened armor.

U.S. 75mm M61 Tank Round - WWII: 75mm M61 HE/APC-T This is the 75mm APC cannon round used in the U.S. M4 Sherman Tank. The Sherman was the main American battle tank during WWII. Classified as a medium tank it weighed 35 tons and was made in a number of variations with different cannon, this being the type which rolled ashore on D-Day.

The M61 Vulcan is a hydraulically, electrically, or pneumatically driven, six- barrel, air-cooled, electrically fired Gatling-style rotary cannon which fires 20 mm × 102 mm (0.787 in × 4.016 in) rounds at an extremely high rate (typically 6,000 rounds per minute).

The APC-T cartridge M61A1 is used against ground targets, primarily armored materiel. The projectile consists of three parts: a steel body which contains a small charge of , a steel armor piercing cap, and a 360° crimped lightweight steel or aluminum ballistic cap or windshield. The base is threaded to accommodate a base detonating fuze.

Nov 1, 2023 · The M61A1 was an improvement over the M61, a small explosive charge was added. The base is threaded to hold a base detonating fuse. This fuse functions with delay action, which allows for penetration before detonation occurs.

This was essentially a giant shotgun shell full of large numbers of steel balls. Canister was used primarily in the Pacific. There was also the M88 base-ejecting smoke round and the M89 White Phosphorus (WP or "Willy Pete") round which proved highly effective in the Bocage fighting around Normandy.

Real world conditions take into account more than just raw gun performance. The Sherman could spin its turret around and do a full rotation in 15 seconds. The turret drive system was very precise as well, and the turret could rotate much slower when the gunner needed to be precise. The gunner had good elevation and depression, -12 to +25 degrees.

The AP shell for the 75 mm gun was a 15 lb (6.8 kg) projectile with a couple of ounces (60 g) of HE filling propelled by a 2 lb (900 g) charge to 2,000 feet per second (610 m/s). In British service, the AP shell was used without its explosive filling and as such was referred to as "AP Shot M61".

Mar 4, 2013 · For 75mm M61 APC shell it would be just a little bit higher at 1781fps equivalent to 750m(!). I went to check the report of this trial and there you go: the initial velocity for the M61 shell is listed as 564m/s(1850fps)!

Oct 8, 2015 · The M61/A1 could come with an explosive filler of 0.144 pounds of Explosive "D" and the M66A1 base-detonating fuse, similar to the German Panzergranate rounds. Due to production problems, the M61 or M61A1 with filler did not see service until late in WWII.