Hormones are esterified to slow their release into the bloodstream and prolong their duration of action by increasing their fat solubility. The esters used are just carbon chains of varying shapes and sizes, with a carboxyl group bound to and cleaved from the alcohol on the D ring of the parent steroid. Generally speaking: the larger the carbon chain, the more nonpolar/hydrophobic the compound meaning the depot will stick around longer and the ester will be cleaved at a slower rate by the body's esterase enzymes. So testosterone propionate, having a three carbon ester, will be released bound and metabolized more quickly than testosterone enanthate which has a seven carbon chain attached. In addition to altering the rate of release, the ester in use will alter the relative amount of hormone per weight of total compound. IIRC test prop is ~84% test by weight while test e is ~72% which I think is where you're getting your 15% number. But I'm not solid on those numbers. Anyway, so those are the two big ways that the ester used alters the curve and AUC of hormone release. That's good that you used the same dose location because injection site does play a role in the release as well, and I'm not trying to downplay your effort. but precise consistency between blood samples would take some serious doing. What I think you're overlooking though is that while each ester has an accepted window for when to get your blood drawn, these times aren't perfect and still won't always give equivalent values as far as where along the curve of hormone release your value lies. That was convoluted but I can't think of how to explain it any better.
So I'm currently in week 6 and will be finishing the tbol run next week. The strength gains have been great, I went from a 110kg bench to 125kg bench (3x8) Dead 130kg to 150kg, squat 115kg to 130kg (3x8). Pumps are awesome in the gym. vascular pretty much all the time. The other thing worth mentioning is mood - have been feeling so focused and driven since starting the cycle, not just in the gym but also career wise and relationships. good overall wellbeing mood. The EQ should be starting to kick in soon, and ive also added in 350 tren ace for the next 9 weeks to assist in recomp. Cals have been set at 3000/day. Weight has gone from 93kg to 99kg over the last 6 weeks. I'll post another update in a few weeks. AI is in on the lower normal end (2 x asin per week). Hope this helps.
1)trying to push to get the most out of the cycle in the shortest time for EBC
2)Thought of running short esters the whole 12wks, but this was the compromise to minimize pinning, and I only anticipate the EBC to be 12wks and a recomp, so bulk is premier along with cutting at the end
3)Thought of frontloading this along with the 1-test, but figured the Proviron would fill the initial void until the Mast kicks in. Still wanting input about the pro/con of running Prov the whole time in spite of having Mast as well
5)the short esters are staggered to A)keep my test higher than NPP B) Mast higher than test and test lower than 1-test