Yes,what all the others said is true, 7 innner strands is mil-spec 550lb test. There is other Mil-spec cord with less inner strands that is actually 375lb test.
One use for good strong paracord is to use it in snow covered forest areas to tie a rock or heavy object to it and throw it over dead tree branches and pull them down for a campfire. Could be a lifesaver! Often overlooked technique.
If you are in the military on a base check to see if they have a parachute loft on the base, they will give you about as much as you want and you know it is real! Cheers