the semi-automatic 45 pistol holds seven rounds in the magazine and one in the chamber
Which model?
Depends on the pistol. Typically 10 rounds for a Colt Woodsman.
Assuming your are referring to a Taurus PT1911 which is similar to a Colt 1911 the magazine would typically hold 8 cartridges. Original 1911 magazines held 7 cartridges and there are 10 cartridge and larger magazines available.
7
None. No such gun.
It depends on the pistol make and model, and what it is chambered for. Most semi-autos nowadays hold at least 12 rounds. Most revolvers hold six.
up to 20
6, IIRC
A standard .45 caliber 1911 pistol typically holds 7 to 8 rounds in its magazine, depending on the specific model and magazine configuration. Some extended magazines can hold up to 10 or more rounds. The design of the 1911 has remained relatively consistent since its introduction, but variations exist among different manufacturers and models.
What model?
The Model 1911 is a semi-automatic pistol chambered in .45ACP. The Model 1917 is a large frame revolver also chambered in .45ACP but using half-moon or full-moon clips to hold the rounds.
usually six, but if only 5 chambers then 5 rounds