[PAR] [TLE] .45 ACP [SEP] The .45 ACP (Automatic Colt Pistol), or .45 Auto (11.43×23mm) is a handgun cartridge designed by John Browning in 1905, for use in his prototype Colt semi-automatic pistol.  After successful military trials it was adopted, along with the Browning .45 Colt handgun, as the .45 M1911 cartridge.  The handgun was designated M1911 pistol. [PAR] [TLE] .50 GI [SEP] The .50 GI (12.7×23mmRB) pistol cartridge was developed by Vic Tibbets and Alex Zimmermann of Guncrafter Industries.  The .50 GI was introduced at the 2004 SHOT Show alongside the Guncrafter Industries Model No. 1, a variation of the M1911.  The round has a rebated rim that is the same diameter as that of the .45 ACP.
[PAR] [TLE] .45 ACP [ SEP ] The .45 ACP ( Automatic Colt Pistol ) , or .45 Auto ( 11.43×23 mm ) is a handgun cartridge designed by John Browning in 1905 , for use in his prototype Colt semi - automatic pistol . After successful military trials it was adopted , along with the Browning .45 Colt handgun , as the .45 M1911 cartridge . The handgun was designated M1911 pistol . [PAR] [TLE] .50 GI [ SEP ] The .50 GI ( 12.7×23mmRB ) pistol cartridge was developed by Vic Tibbets and Alex Zimmermann of Guncrafter Industries . The .50 GI was introduced at the 2004 SHOT Show alongside the Guncrafter Industries Model No . 1 , a variation of the M1911 . The round has a rebated rim that is the same diameter as that of the .45 ACP .
Which cartridge did John Browning design that has a rim that is the same in diameter as the .50 GI?
Which cartridge did John Browning design that has a rim that is the same in diameter as the .50 GI ?
.45 ACP
.45 ACP