well i dunno if its good or not, i dont think many people have made it past the 3rd shot lol
but if they are putting tht much ba in it, id imagine there really is alot of prop in it, otherwise they wouldnt put so much ba.
to get to 100mg/ml you need to add 1.5ml oil to every 1ml of prop. why? cause you have 250mg of prop, so you want it to be in 2.5ml of total oil, which is 100mg/ml. fyi i have a feeling your gonna wanna go lower than 100mg/ml, there must be a shitload of ba in there if its really 250mg/ml right now.