Im a pretty fanatic Meditator i've only done DMT about 4 times, but I drink Ayahuasca tea on a weekly basis. A trip is much more wild and vivid than anything you can imagine. The problems with experiencing a DMT trip is that it only lasts about 5-10 minutes, and remembering what you saw is like watching something disappear into the distance.
And a gunshot wound to the brain wouldn't let you experience that last DMT trip sadly.
If your interested in one of these trips without trying to find DMT which is incredibly hard to find or drinking Ayahuasca tea which is even harder to find, then meditate. It's not as instant or as powerful but it will give you an idea.