the purity is an estimate, though I am generally confident its accurate. In LA, the purity on avg from dea is 30% with the tar going up to 90%. I have been using 10 years, and comparitivly the amount of morphine I need for a similar effect(about 1500 MG = about 1.0-1.2 g of tar) or the amount of oxycodone (about 700-1000 mg) leads me to estimate that range. I have experience with detoxing both with Subs and with methadone. With subs, I need to wait about 24-36 hours prior to dosing for them to work. After 18 hours, I no longer will get put into withdrawl from the nalaxone, but it doesnt make me better either. as a result, I do not like using them. With subs, I need to take 16mg the first 2-3 days, then go down to 12mg for 2 days, then 8mg for a week after which, I taper to 0 over the next week. That minimizes the withdrawl, sleep is still iffy, but i can function. With Methadone, I need 150mg, the first day, taper 10 mg a day until I hit 60 MG, then 5 mg a day till I hit 30mg, then 5MG every other day.. Its pretty easy until I get below 25mg... Based on what your saying, I need to take 3-4 g of extract to start. 30-50 mg of oxy won't stave off withdrawl for me. The last time I took oxy, I needed to take 120mg to keep from puking, but it wasnt enough to sleep. I had 300mg, which kept me alive, though still in minor withdrawl for about 12 hours.
*note, for methadone, the minimal dose I need the first couple days is 100 mg in order to still be functional. 70-80mg is the absolute minimal to offset vomiting.
*Note 2 = there are many misconceptions about tar that its weak. generally, it is more potent than the stomped on shit most people get on the east coast(unless you get raw)... I will say that once you get further than 3-4 hours from the border, the quality drops drastically. In san fran, I won't even touch the stuff(thats when I get roxys instead, but its too pricey to stay well, as I need 15 - 20 in a day just to stay good, closer to 30 to get high, that would run me close to 4x the price of getting good tar). There is a huge difference in price too, the high quality shit runs 4-6 times the price per ounce than the typical stuff you see on the street and it is 3-6 times more potent too. I had a friend from 2 hours north of me visit, who would IV 2-3 grams a day up there, he overdosed with a .25g IV shotof the good stuff(I warned him, but he was talking about how he usually IVs half a gram at a time every few hours