What you've heard/experienced is right, Dilaudid (hydromorphone) isn't very active orally, so you need a high dose in order for it to be effective. I've taken 4mg of hydromorphone orally and
nothing happened, but 2mg snorted/intranasally is a good place for me. Of course, these doses will be larger for you as you have a higher tolerance.
There are many different ways of administrating hydromorphone, IV being the more effective, but also the most dangerous and addictive. I recommend snorting or rectal administration.
You're not going to need to snort 192mg to get the same effect that 192mg orally gives you. I recommend cutting that dosage down considerably. As you can see from the
Bluelight Opioid Conversation Chart, ~1.5mg hydromorphone IV is approx equal to 7.5mg hydromorphone via the oral route.
That's a 6-fold increase in potency between those two routes. So, just for example's sake, let's say you go from using your hydromorphone orally to using it IV. You would need to reduce your down to about 32mg, but you would want to use less since IV is much quicker acting than oral is.
Going by these numbers, I would start with intranasal or rectal (anal) administration.
Here is a FAQ/information thread on rectal administration (plugging). I would read through that as well.
If you're interested in snorting, I would start with 1/4 to 1/6 of your normal oral dosage and work your way up from there. That's basically between 32 and 48mg. It's pretty impractical to snort all that powder at once, even with the 8mg pills. So you may want to space it out by some time, alternate your nostrils and use a saline rinse such as a
Neti Pot or a saline nasal rinse/spray to clear out your nose/sinuses before snorting the rest of the powder.
Snorting hydromorphone will cause it to hit you a lot quicker, which is why I recommend starting on the lower end of the dosage scale and working your way up, you may need less dosage because the onset is faster and you'll be able to gauge your reaction within 10-20 minutes and then you can decide if you want to snort more or not.
Hope this helps, feel free to ask any other questions.
-NT