Did they the new time release to the MSContin just like the OxyContin? Anyway I used to take them all the time about 8 months ago before the new time release. Morphine has a poor BA by mouth and poor staying power by snorting. If you have an oral syringe dissolve it in water and shoot it up your butt, rectal administration is like 2x stronger and like 5x stronger than oral. If you don't have an oral syringe or you don't want to shoot it up your butt then just take half orally and when you start to feel it come on snort the other half. This will give you a balance between the rush and the staying power.
i actually do get good pain relief so i'm not complaining.i'll pass on the rectal part, butt i'll let my wife know. maybe i'll get lucky !!!