[mnehring]

What is difficult about matching casings to magazines if they were all shot with the same rifle?

Hollowpoint bullets would have shattered if they hit the walls or floors so it would actually be rather difficult to account for every fragment to ensure that another weapon wasn't used. Investigators like these don't like any questions. The ones I know are very OCD.

[loboinok]

Thanks but my comment refers to ‘casings’ not the bullets that were fired from them.