how much nitrous will a stock magnum motor take

Now I know a 318 and a 360 are different and Ive always known the 318 to be “bulletproof” but it should give an idea of how the magnum’s stock pistons, rods, and crank are... I got a buddy that had gotten a Dakota chassis and he put a magnum 318 in with over 100k on it and it was all factory except for an rt-10 cam, headers and m1 intake and he sprayed a 150 shot MANY times, and went up to a 200 a few times, he even mentioned one time that somehow during a jet change he got the fuel and n2o jets mixed up and didn’t kill it... that engine has been in a couple different trucks since he sold the Dakota, one was a ram he’d used for about 2 years as a daily and another Dakota which the engine was still running when he sold the Dakota...