1. Whenever you change bullets (Zero's to Xtremes, eg), you have to Plunk them once again
2. Did everything plunk in the 1911? or the 2011 ?
You have to Plunk them into Your Gun (the 2011) and see what happens.
3. When you're loading rounds thru your mag, into the chamber, they fit or they don't fit. You're correct,
that's not exactly part of The Plunk Test, but pretty important to make sure rounds feed from you
magazines (all of them, not just one). (See comments from JCC7 and Sarge, above).
Good luck with it