Contact Springfield Armory Customer Service through their website, and request an owner's manual. I could describe the process, but unless you know the names of the parts I would mention, my description would be meaningless to you. And you SHOULD have the manual anyway.
see the link below
You will have to call them to find out.
It is a target pistol made by Springfield Armory.
You will have to call the factory
check: http://stevespages.com/page7b.htm
Best left to a trained gunmsith
100-1000 depending on specifics
Follow instructions in owner's manual.
Best thing to do is to get a gunsmith to help you.
Best left to a trained gunsmith.
You need the help of a gunsmith
The Springfield Armory 1911A1 manual states that +P ammunition should only be used in firearms with barrels of at least 5".