Sure did. I am new to it. So a big part of it is my stubbornness to not listen to other people. Decided to start with Test propionate and brewed it way to strong @ 200mg/ml 2/20 in MCT. First mistake.
Decided to try to "water" those down to 100mg/ml 2/20 in MCT. Basically split the 10ml I brewed into 2x 10ml vials and put 5ml in each. Added MCT, BA, BB at the same ratios and still gave me pip.
Decided to try a new brew with castor oil after reading through
@narta Castor oil thread with 100/mg 1/15. Holy thickness. Tough time getting it through the filter. Tried it and took 10 minutes to get in to the muscle. Still got pip and a lump but not as bad.
Tried Castor oil at 100mg/ml 1/50. Much more thin and easier to inject but this was one of the worst for pip and literal golf ball lump.
Tried Castor oil at 50mg/ml 1/50. Again, massive amount of pip, same golf ball lump and lasted for 7+ days until is started to go away.
Decided to try MCT again.
@Dirthand mentioned going lower than 100mg/ml. Went 70mg/ml 1/10 and bingo. No pip. No lump. Been using it for a few weeks on 1 side of my glute and it is solid.
Went back last Tuesday to try the Castor oil 50mg/ml brew 1 last time on the fresh side that hasn't been hit in a while. Same reaction as before. Massive golf ball lump from it that is still annoyed 7 days later. Finally parted ways with it in the garbage.
Next try is Castor oil with Miglyol 840 and skipping the BB.
All of that came from my notes. Highly recommend taking notes of every brew attempt, "batch" number, concentration, carrier oil, how much BA/BB, injection site, how the injection site felt, how YOU felt from the injection (seems like people react different to IM vs SubQ), pip or not, lump or not, subq or IM.
I learn by trying stuff. Trial and error is the best teacher for me but listening to people when they tell you something might not work probably would have saved me some time.
This is a perfect hobby for you are a wanna-be scientist and you like to experiment.