+P amunition can be used in most modern handguns. If you have an older gun consult a gunsmith prior to using it. +P is primarily used for self defense ammunition. It has higher pressures and faster bullet speeds. Sometimes that does not translate to better penetration.
Any .38 ammo can be safly fired in a .357. +P .38 loads do not exceed .357 pressures.
You must contact COLT for the best answer.
No. Dimension-wise, they are similar, but there are differences in neck angles and case thickness. .223 Remington ammo can be fired in a 5.56 chamber, but 5.56 ammo should never be fired through a .223 Remington chamber.
If you mean +P ammo the answer is no. It is rated for standard pressure ammo only.
any 45 cal ammo will work in a 45 cal pistol
Simple answer, No.
The Springfield Armory 1911A1 manual states that +P ammunition should only be used in firearms with barrels of at least 5".
yes, but better to use standard ammo. +P ammo shakes the pistol a lot.
Pressure
I don't think there is any +P ammo made for the 32 auto ????????
If you mean can you fire non plus P ammo in a gun rated for plus P, yes, you can safely do that as long as it is the correct caliber.
Unless your owner's manual for the PT1911 states that the barrel is rated for .45 ACP +P ammunition, I would not risk damaging my pistol, or myself trying to shoot this powerful load. Regular .45 ACP ammo is more than sufficient for most circumstances.