I heard more than a few stories from my Viet Nam vet dad of opium dens, and what he described was a process. Something like a dose heated in a cauldron and worked into a molten ball, then painstakingly manipulated in the air, with chopsticks by a 150yo Chinese sorcerer and his dragon while round-eyed girls stole your money and penicillin--dropped into your pipe that then exploded into swirling clouds.
Is that right, Dad? Neither he at the time, nor me as an eight year-old, are the most reliable narrators, but that was the impression. These were heavy, pre-heated pipes kept hot on some brazier-type deal, I think. And it took an ancient Asian man to work the whole thing, but then, maybe only for pre-baked American GIs.
The only stuff I've witnessed was a traditional (Iranian) hookah, in a suburban living room, so I'm pretty sure smoldering ruminant shit is not a requirement for that form of paraphernalia.
Point is, I bet a whole lot depends on the type of pipe. If yours, OP, is collectible, I wouldn't risk sending soot and burning tar up the stem.