I'd struggled with calves for a long time, and they're still nothing to brag about, but I've been doing a modified routine I read about on here that has been working for me. The premise was that to force some growth from the gastroc, the soleus needs to be completely exhausted first. The Soleus takes the brunt of the work when the knee is flexed, so my routine goes like this and I'm doing it 2-3x per week.
Seated Calf Raise: 4 plates, 100 reps in as few sets as possible, 1 second concentric/3 second eccentric. After the last set, I do drop sets down to 1 plate.
Leg Press for Calves: 4 sets of 4-6 reps w/ knees not quite locked out. (I get a better squeeze this way.) Use a full ROM
Standing Machine Raise/Bodyweight Raise Superset: 3x 12 reps each, holding and squeezing for a 2 count at the top.
My 2¢. It's been working for me.