Ok, I thought I'd share my recent experience brewing up some high strength gear.
I recently brewed up a batch of EO based primo acetate at 200mg/mL. I also have it on good authority that I can get tren acetate easily up to 200mg/mL and at a push 300 or 400.
I cant say how pleased I am really with this as I've found the following.
1) EO gear at high conc is perfect for subcutaneous injects. I've been injecting volumes of between 0.25 and 0.5 mL sub Q with very minor initial irritation which subsides within a few hours. Next up with this are test acetate and tren. It now seems quite possible to run a completely SQ cycle, which as far as im converned is a major plus.
2) Its also perfect for site injects of awkward muscle groups. Using backloaded slin pins with small volumes ive been doing IM injects in my forearms. I have a feeling I can get primo up to even higher concs with this, and the pumps ive been getting in my forearms are retarded. It should be possible to inject 100mg of tren or primo into tiny muscle groups with some experimenting.