Do not stretch it to five levels under any circumstances. Three levels is already too many levels, really, to devote to a single weapon. A 10th level character needs way more than "I am really good with this single type of weapon."
Do not stretch it to five levels under any circumstances. Three levels is already too many levels, really, to devote to a single weapon. A 10th level character needs way more than "I am really good with this single type of weapon."