I was a heavy smoker and still smoke a bit. All I get from snuff is withholding of withdrawals; no nic hit from anything I’ve tried. But I know I’m getting nicotine because I can hold off smoking if I snuff enough. I just got some Rooster from a cool fellow forumite, and to the extent I can take a good pinch of the stuff, I do think it delivers more nic than a lot of snuff does. But I sure have to be careful with it! Dang, I about blew the back of my head off the first time I used it… 
I think a lot of the “hit” you get from snuff like rooster is mostly just the burn. Even “high nicotine” snuff has much less nicotine absorption than cigs or snus IMO.
I used to get a buzz, but not really any more now I snus and dip.
I always get the hit instantly, but the way I feel it changes a lot, specially depending on dosage. With small amounts I feel almost nothing, only a bit of a calm feeling. If I take more, it has an euphoric, stimulating and motivating effect, and I feel a bit dizzy (not unpleasantly), and my body and movements feel lighter (but I can still move normally). It also makes my brain tingly, but not always. It happened more often when I started using snuff.
We all experience it differently in any case. There are a couple that I would describe as giving me a hit though. Dholakia white through a bullet for example, but snuffing is more a gentle topping up of nicotine throughout the day. I would really like to see some analysis of the different brands nic content.
I pretty much just use snuff and feel a hit within a few seconds. If my tolerance was higher I wouldn’t feel a thing which is why I stay away from stronger stuff except occasionally.
Also, the effect snuff has is a lot different for a reformed smoker who is used to massive quick jolts of nic than it is for someone who has only ever snuffed. Were you a smoker rdunnion?
I smoke, and snuff just barely keeps the nic cravings off. its the goodness of the stuff in itself that keeps me coming back, although the nicotine does play a role. especially when cutting back on the cigs which I attempt from time to time. problem is I truly enjoy those too when i’m not chain smoking them.