re: Anyone had Testosterone pellets?

I've never used them, but if you're low in testosterone, coming up to normal levels should (in conjunction with training) increase muscle.

The caveat is that real TRT isn't designed to be like the TRT athletes claim when they get busted. Essentially, you should have better capacity to build mass, but not what people associate with steroids.

Even if you optimize testosterone for muscle growth for age, there are other parts of the equation that degrade over time, so you won't be 22-25 years old in terms of full muscle potential.