How much test E per ml realistically?

I wanna to make mine as concentrated as possible but not to the point where I have to use EO or have crippling pip, or even any pip aside from what the pin itself might cause.

Would 350 be the max before it starts to get painful

300 would be the max I would say. Im sure others will say they have made stronger ones etc but at 300 is that amount between pain and comfort.

Im not saying you cant make it higher but stick with 300. Also watch the Test E, there has been a ton of raws on the market that have not completed the acid wash and is not pure and causes pain even at 200mg/ml