I've only been banging for a year and I use H dilaudid oxymorphone and the occasional coke (I've actually been on bupe for about five months but continue to use the needle). All my arm veins are still hittable and I hardly use my crook unless I'm slamming coke which is maybe once a month. Tonight is actually the first time I have in a while. I usually do the first 4 or 5 shots back to back then give it a rest. I can see why experienced IV users start to eventually miss because veins begin to get a little more tricky after you've used them for a while. The trick is to rotate veins and use needles one time maybe two if I don't register the first time, which isn't the best advice but 2 is my limit I mean a box of 100 is 12 dollars for Christ sake.
I'm only 20 but a lot of my friends are older and I'm the only one who has the nuts to go to the pharmacy and get them. IV coke only makes me a fiend for one day if it's around I usually run out of kpins early because I can never afford or get a fucking full agonist because i only get dope occasionally because the town I live in in TN. Opanas are everywhere though I usually get the generic moons and do the ISO extract and sometimes I come across the IRs but they're expensive as fuck. I want to move to Knoxville where UT is so I can get on 'done quit the needle. But I'm afraid I can't because I buy 90 1mg kpins a month from a friend who's on the needle too and doesn't like them. I use them as prescribed and am too afraid to come off. I have no insurance and get bupe off the street that's Why I IV them or I would be broke most of the time and I work and have to pay for a lot of shit. Luckily I got my shit together after the old opanas were discontinued. Even though I occasiOnally shoot coke and full agonists but my coke plug will be gone soon and it's the only shit in town that completely dissolves in water and isntshit it's always nice and rocked up little more expensive than usual but so much more worth it, only blow in not afraid to put in my veins.
Damn sorry for the rant was actually just posting to post pone my next shot. My suggestions is wait 20 minutes minimum which I don't do half the time but am forcing myself too for my safety I don't do gigantic shots because I'm always alone or with someone else that is slamming it because if I keep doing them back to back I get worried and feel a little ill. It's funny cause the first time I did it I didn't really like it Guess it was too small of a shot or a shitty batch, but that rush is something you'll never forget the taste, the scent in your nose it's almost like a whole different drug.
I did my first shot of H at 17 still in high school ( still graduated on time with a opiate habit

) and I literally didn't start shooting again until a year a half later and I talked my girl into letting me do it to save money especially bupe. I wouldn't let her use the needle though. I finally got a job about six months ago and have really improved my life even though my addictions but my habits aren't my title the person I am is. The fucked up thing is everyone who knew I was strung out before I started slamming say I look healthier now and even when I was banging blow every other day/ few days only a few people know I use the needle and it's not my family or my closest friends. Except my girl and a coulple other friends I was close to even before they started.
Anyways give it I'd say 30 mins between shots and just use your arms I've never missed coke and only had partial misses with opiates and I rotate every vein in my arms and hardly ever use my crook for some reason I can't hit my right one anyways because its like under my muscle and you can't ever see it, although I hit veins I can't see on a regular basis but I drink a lot of soda but half the time my veins bulge like hell because I'm like 5'8 160 solid and I could hit with both hands from the beginning. Do the suction method like someone said in a previous post it's flawless. The first time someone shot me up and then later on I found some .3cc 31g and registered with water first time without the suction.
But yeah man just use your arms I have a friend who I actually got my white gear for me until he moved and gave me his plug hes 5 years older than me 25 and was a phlebotomist in the past and I'd see him use his calf when he had only been shooting for a month or so. I feel like my friends who shoot now started from their curiosity from me. He has terrible technique used his arms and legs and suctions and pushes away without registering during his shots. I use my index finger and middle on the plunger the only time I use my thumb is if blood is starting to get thicker and I need to get off quick. Oh and I tied off for the first couple months but I hit veins and register so much easier without a tourniquet.. I got my friend to stop using one and he has a lot better luck now.
I've never smoked rock but how does it compare to IV coke? If its the same I'd rather hit the pipe then go through 25 points...
Edit: sorry I typed such a long post I'm in the middle of a binge myself and yeah IV coke is scary I don't have a scale so I'm playing with fire but what I usually get is the same quality rocked up kind soft completely dissolves in water. I seem to get a rush every shot even if it's back to back but when I start to feel a little nauseous I take a break. I'm not one of those people who hears the train and the ringing and puke I've taken shots that rocked my world so hard that I get scared as the rush Keeps coming up. Becaus I usually use 30 units and push slow just in case I prepped too big of one.