Dose - Fentanyl mixed with pure heroin dose

[mcempire999]

Swim has got his hands on some pure 95% heroin and a bit of fentanyl.

he is going to make a mixture of both mixed with lactose he wanted to know if this mixture is safe to iv or smoke.

pure 95% h: 1200mgc
fentanyl: 600mgc

lactose: 48,200mgc

(fentanyl was diluted with lactose and filterd)
(then pure h was added to the filterd substance using common cutting method razor blade)

swim knows that there are people out there that say do not take more than 200-300mgc of fentaynl at time. But swim was thinking surely this does not mean the maximum amount when mixed with large quantity of lactose.

does any one think this will be a good mix or to deadly? be assured swim has mixed this properly.