The 1st question I have for you is..............Are you sure that what you're getting is ACTUAL Ketamine, and not something like NorEthylKetamine, or 2-MeO-Ketamine?? That could be a huge difference right there. I've read a LOT of reports of people not being able to get to where they're trying to go from the new Ketamine varieties that are available.
I will absolutely agree that part of your problem is Permanent Tolerance. Dissociatives have what I call a Lifetime Tolerance - where you can take long breaks and it will lower your tolerance considerably, it just never lasts. When I take a week or 2 off, I can do a 75-125mg bump of MXE and reach get mild hole effects - but even after 30+ days of NOT taking a Dissociative, I still always have a very high Permanent Baseline Tolerance which never really goes down much further. You get increased Sensitivity to the Psychedelic effects with abstinence, but you'll never get back to where a 50mg bump will do a whole lot for you. I would honestly recommend switching back over to MXE if you liked that buzz - it's SOOOO much easier to Hole or travel wherever you would like throughout Disco Land. If you think about it, technically speaking, 3-MeO-2-Oxo-PCE is just straight up CHEMICALLY SUPERIOR to it's original compound, Ketamine. I'll always be down for some Ket, but I could seriously do 1gram in 4 bumps over the course of 2-3 hours with no problems. I can do a 75mg shot of MXE and be in that sweet spot for 4-6 hours. That's just my preference tho - do what you do my friend. Ketamine does have it's own unique style that's quite different from MXE.
When you break up your large Rails into smaller bumps - that right there is part of why you aren't holing. You need to do the ENTIRE dose all at once, sniffing every line you plan on sniffing within 30seconds of one another. As soon as you do a bump of Ket, your Tolerance IMMEDIATELY starts to go up with every single hit that you take. Do a 50mg bump, and the next 50mg bump is going to feel more like a 25-30mg bump because of that QUICK Tolerance build up. If you're aiming for a Hole and aren't scared to visit it - just stick to sniffing enormous bumps all at once. I never put bumps into lines anymore just because of the way you NEED that super quick hit all at once to truly Hole off of Dissociatives after a while. I take the line I'm going to do, and I condense it into a very small and tall, Box shaped pile - usually 2 of them next to each other, each about 100-150mgs. When you sniff these boxes as opposed to long lines - it's like shooting a fucking bullet of Ket Powder up your nose, you can literally FEEL it hitting EVERY RECEPTOR in your sinus. Try doing that, one MASSIVE DOSE, All at Once, and put it in a tall pile instead of a line. Let me know what you think.
If that STILL doesn't work, and you don't want to try IM - you're next best bet my be trying something like how people Waterline Black Tar Heroin. You take your K, put it in a spoon with some water, you'll need some form of Syringe, but just for measuring and application. Take your desired amount of K, put it in the water in the spoon, stir it up or heat it up until all of it melts into solution, filter it thru a cotton to get rid of any junk in the solution, draw it up into an Oral Syringe and shoot the liquid up you nose. Then you just kind of keep the liquid closer to your Sinus's as opposed to swallowing it down. That would solve your problem of your nose clogging up and allow you to get a little more into your Sinus without clogging it up. Also, don't even waste your time with ORAL KETAMINE - it has a HORRIBLE BA when you take it like this, you WON'T HOLE unless you eat a fucking gram or some crazy shit, and it only lasts a LITTLE bit longer than snorting unlike other drugs taken orally which usually significantly lengthens the effects. Fuck Oral Ket, if you want an Oral Dissociative, fuck with DXM, MXE, or PCP. Way more worth while to eat for sure.
As far as your being Heavier - that may make a little bit of a difference, but fortunately, compared to other drugs, thanks to their Potency, Dissociatives can usually overcome most Body Pharmacology Issues raised by being heavier simply because they're so damn potent mg for mg. You don't really need to increase the dose THAT much just because you weigh a little bit more, it goes WAY more into your previous MXE usage. That's where your difficulty holing is coming from. It's like if you were to take Oxymorphone and Hydromorphone (Opana & Dilaudid) for 2 years and then expect to go back to taking Hydrocodone and Oxycodone and still be Well and not in Pain. It's just not going to happen because the 1st 2 drugs are SOOO much more potent than the 2nd two. Opiate and Dissociative Tolerance is actually a really good comparison because they build tolerance in such a similar way.
Once you're tolerant to Dissociatives, you will FOREVER need that One Big Hit to get to your desired location. It's not necessarily a bad thing, it's just something you have to keep in mind. The more tolerant I am to Disco's, the more comfortable I am in public using them so I don't have to just sit at home so I don't have to worry about slipping into a Hole out in public. I KNOW how much I need to take to Hole and by what ROA. I like having to TRY and get to a Hole instead of just slipping into one all of a sudden when at the Bar or wherever. It can be scary when it happens in public. Always be aware and be safe.
My last thought for Snorting was a trick me and an Ex-Friend used to do before we would do a huge Keta Bump trying to get back to the Hole............We would make a Pot Of Super Hot Tea on the Stove and both have a nice, warm, steaming cup prior to that Big Ass Keta Bump. It really helps Open Up and Clear Out your Sinus Cavity. It helps you get as much absorption as possible. Give it a go, even if it doesn't work - a nice warm cup of Tea is still nice for Re-Hydration prior to Holing out. Take care and have fun. Hope I helped you somehow - Mr. Meowfish