For the first four weeks of my cycle I've been using 400mg of test C. I've been getting British Dragon Testabol Depot 10 ml vial, 200 mg My supplier ran out and sent me Test E Primoteston Depot Testosterone Enanthate 1 ml amp, 250 mg. Is this a good substitute and is a mg of test, a mg of test no matter what? Or will I have to take more than 400mg of the test E? Believe me, taking 1 shot a week instead of ten sure sounds good to me.