I'm 90 plus percent sure you can get 10 grams in,maybe even 12, if you preheat it well before adding the powder , and use a marble/ball bearing in the bottle to shake mix it
I've gotten 10 of both 1T and 6-oxo, seperately, fully dissolved this way. Just get the Gel really piping hot before adding the powder and shake that sukker as if you had Osama Bin Laden by his scrawny neck.