Its called roids LMAO... that dry hard look really is tuff to get and keep when your all natural. What is your body fat like, you need to be around 8-9% at lest and still without a PH or AAS that hard solid look is not really gonna be there, youll definitely look vascular and ripped but the solid dry look and feel not really. I think some of it is genetics, my bro has always been kinda soft even though he's in good shape. I do notice as long as I lift heavy and keep my protein up my muscle feels harder, but not like what I think your after.
Also if I go to low on carbs I actually loose pump, and muscle starts to look flat. That does not work for me but everyone is different, I try to keep my carbs low but I eat them almost every meal. I have become much leaner and fuller looking by keeping carbs in my diet but keeping them low for a few days, then do a carb up every now and then.