I know plenty of people that sniff 6,7,8 bags to get high. The people that shoot it usually do 3-4 bag shots if they can, but they do that 3x a day as opposed to the sniffer doing it once.
1.5 -2.5 seems to be what I need to get high now. I say that because with some batches 2 is too many, and if it's a weaker batch I can do 2, but usually can't finish a third. The key is definitely to not use on consecutive days, and ideally stick to 2x a week.
The people that are doing a bunch of bags are likely the ones that switched over to dope at a high dose of oxy or opana. I've known plenty of people that were doing a ton of oxy, so we're underwhelmed when they made the switch over to dope, expecting to be blasted off of a bag. When I switched I was doing an OC 80 in the monrning, and another at night if I could afford it, so when I did my first bag I was able to do it all and feel good, but there was more to be desired. So I can imagine how people feel when they do 1 bag when their oxy tolerance is through the roof.
One more thing. To everyone saying they need subs to quit, I never have much of a problem just tapering with dope. I get down to a bag a day, and then do a bag every other day for a week, and then maybe do your last dose on day three, but if you are almost over it by then, then don't bother. It's easier to taper like this when you are low on cash, but I'm pretty sure that at least a few of you fall into that category. The first time I tapered like that was when I was low on cash so as cash flow got lower, so was the amount of dope and the frequency that I was using. Then when I was out of work and got to the end of day 2 of no dope, the withdrawals weren't that bad, and the when I though back on my pattern of use, I realized that I had tapered without really realizing it.