In addition to what he said, confirm standard Blazer Brass 230gr RN uses small primer. Other threads in other forums where the search function is a bit more reasonable (eg the 1911forum) would give you more brands.
The problem could of course go both ways. A small primer will (at some point) fall out of a large primer pocket. A large primer will not fit into a small primer pocket. You should notice the difference in stroke and pressure . . . and if you try to slam the primer home, it could go off. Whether it would kill you or not may depend on how closely you were examining the primer pocket at the time.
The difference is small, so if you're not examining carefully you might miss it. OTOH, once you're familiar with both variants the difference is easy to see. Experience, examination.