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United States' 3" Gun Penetration tables

Weapon Type of
Ammunition		 Weight
(lb)		 Velocity
(ft/sec)		 Range ° Thickness (mm) of armor penetrated
100 m 500 m 1000 yards 1000 m 1500 m 2000 m
3" M56,7 (76.2 mm)   15.436   16,100 yards6
14,720 m6 		206     3.85"6
96.36 		96.3    
APHE       30       85    
APC7 15.47 2,8007   07     1007      
APC M62       30   97   90 80 74
3" M7 AP M79 26.8 2,600   20   4.7-3.2"   3.9-2.8"    

Sources:

  1. The Encyclopedia of Tanks and Armored Fighting Vehicles - The Comprehensive Guide to Over 900 Armored Fighting Vehicles From 1915 to the Present Day, General Editor: Christopher F. Foss, 2002
  2. British and American Tanks of World War Two, The Complete Illustrated History of British, American, and Commonwealth Tanks 1933-1945, Peter Chamberlain and Chris Ellis, 1969
  3. World War II Infantry Anti-Tank Tactics, Gordon L Rottman, 2005
  4. Tanks of World War II, Duncan Crow, 1979
  5. Armour In Profile #3 M.4 A3 E8 Sherman, Peter Chamberlain, Chris Ellis, ?
  6. US Army Handbook 1939-1945, George Forty, 1995
  7. Allied Artillery of World War Two, Ian V. Hogg, 1998