Following Gant's lead, splitting wood and chopping has me sporting some popeye like forearms. Same for many of the folk in my sport.
The muscles recover quickly because you use them frequently. Something about evolution or how we've transformed since walking upright. So repeated and frequent exposure to whatever you are doing to do will be necessary.
My personal thought is that forearms are very similar to calves. Genetically pre-destined. You can get them stronger or make your grip stronger. But the "jackageness" may depend more upon what your mother and father gave you. And noticable structural changes may take years, if not decades. I know, from my own experience, that mine didn't get over 15" (arm extended - not flexed) until I was in my late 30s.
All the best,
Lifting heavy stuff is fun and relative......