I've been experimenting with site injections with Tren on this cycle, doing almost all of my shots in my bi's, with a 27g 5/8" needle, as I want these fucking guns BIGGER! It's slow to go into this needle, but it does go in. I also use 25g 1" needles sometimes, in the quads, but most of my shots have been in the bi's, rotating upper-mid-lower, inner and outer bi's. SO far, they've gone from 18 1/2 to 19 1/2 on this cycle, but some of that might be the oil in there too--I'm hoping to hit 20", dammit!
I'm trainnig bi's tomorrow. Can't wait!