Ramus gains from chewing results

[hairyballscel]

Is a 5 mm increase possible though

yes it is

 

[hairyballscel]

where did he say that?

he didn't, ignore this idiot

 

[AscendingHero]

You can't really do this, most of jaw growth takes place as an infant, this is why the mews use appliances for children 7 and older. Chewing can make the jaw look more defined and wide from the front. See this competitive eater, this what chewing does:
View attachment 818868

If you want a more developed ramus and mandible you're going to need jaw surgery, or an appliance (which is way more effective the younger you are)

what appliances do u recommend?