IGF injection areas?

[BARBENDER29]

From what I've read,you should inject the IGF in muscle groups where you want to grow the most or in trouble areas.My question is if I wanted to inject into my thighs will the IGF even reach the muscle?I understand that it will be alright in the bi's and traps,and smaller muscle groups like that but what about larger muscle groups?Or would it be wise to use a regular 1" pin for larger muscles?

[Mr. Sparkle]

Lr3 Igf-1 does not really produce site specific gains... JohnnyB shot in his quads only and gained a half on an inch on his arms.

That being said I still try to inject into the muscle worked...
I use a slin pin bro...