when performing the pipe bomb method on halosafrole/MeAM, what pressure should SWIM be shooting for? should the pipe just barely hold the aqueous contents, or should there be some open space on top?
Don't fill the bomb to the top! You want a lot of head space or the pressures will be excessive.
Sorry to offer an alternate opinion but the volume a given area of liquid would occupy given it were a gas far exceeds any head space that would be realistic in a pipe bomb normally available to the clandastine. Thus your qustion is irrelevant.
Think 'bomb' does it really matter if a grenade is contained in a grenade twice the size, not really to any practical extent, if we were talking a grenade the size of an automobile then I would start feeling safer if it were to be lobbed towards me (except for the instance if it were to land on me).
Anyway just a rationale counter suggestion, ignore me as you would a dissenting trouble questioner at a scientific forum, that is unless it happens to make sense to your logic
blue always
except for at the start