I always found DXM to be highly unpredictable. At relatively low off-label or "recreational" levels (for me at 190lbs, that was somewhere around 60-100mg) it *usually* put me in a better mood, but just a little too much could send me into a paranoid, self-conscious hell trip! It has a pretty steep dosage response curve in that respect. (That's why users refer to its effects as "plateaus"; It can go from one level to another very easily, and that's not always a good thing.)
I can't even use it for a cough anymore because I've had too many bad trips on it. Just a little bit of that dissociated feeling sends me into a mini-flashback
I'm not sure about dissociatives as a whole, but I'm sure that it depends on both the substance and the user. PCP ("angel dust") in particular has a reputation for making users extremely violent in a way that ketamine doesn't (although it's still possible), and I believe that they're both categorized as dissos.
If you want to try a sigma agonist for aggression issues, ask a psychiatrist for a script for
Opipramol.
I would strongly advise against the use of DXM for this purpose, especially in recreational doses.
I'll have to look into that Opipramol myself. I suffer from rather severe mood swings (including aggression but thankfully not very much and never physical), sometimes two or more in the same day. I've tried countless meds over the years (Paxil, Wellbutrin, Abilify, Seroquel, Risperidone, Lexapro, Remeron, Adderall, Xanax, etc...), but most of them are either too strong or don't do anything at all. I've been looking into a bunch of things from lithium to Latuda, but I won't get any more off-topic here
Take care and stay safe!!!
Dreamflyer