Don't underestimate 250mg, it's not small when you consider that your body naturally produces about 70mg of tests a week, so 250mg is like 350% your natural tests, enough to cause problems.
Actually an adult male produces between 4 & 6 mg per day naturally, that's 280 - 420 mg per wk. The problem arises when the body recognizes excessive test levels & stops producing its own because there's more than enough.