If ya inject anything into a muscle, it will circulate
With the half-life of PegMGF, it wont stay in the muscle you inject it in. Sure, maybe for a few minuits at first, but just like LR3, it will go systemic t osome degree fairly quickly. If you wanted t oinsure that the concentration would be greater in one particular group, then smaller (well, use what ya want), more frequent injections seem like the way to go.
One thing I have definately noticed, is recovery time takes longer (as to be expected) when not using LR3 along with MGF.
Perhaps, if using just the PegMGF, a single, larger shot say on Monday (maybe 200mcg or less) should suffice the entire week... since it will go systemic you'll kinda prolifferate all over, .. and when you work out, the muscle pump will delliver more pMGF to the worked muscle simply because of the increased blood volume,.. which, should still be much more then you are making natty. Just some thoughts though.... As I noticed everything kinda "comming together" twards the end of the week, as (im guessing) the pMGF wares off and allows for differentiation.