so basically I just got back into lol after a couple of moths and heard about graves reworked shotgun and when I started playing I noticed I was not doing as well as I used to be, any type of advice or tips would be greatly appreciated
standard build is in order as the following
He is now the caster marksman (with a damn awesome shotgun) that he should have been when he was first made.
CDR and High AD is a must on him. 
Are just some quick good items on him now.
Attack speed is pretty much a waste on him now. Kinda.
Side note: Check out the PreSeason Changes since a lot of things for Marksmen (including some of their respective kits of some marksmen themselves) have changed. This might help as well.
I haven't played him much since the rework (he feels strange). I know In lane you can bounce his q off turrets to make it come back immediately. I think his e also has some interaction with his new auto attacks (reloads it or something) which is useful. I've heard he doesn't benefit much from attack speed now so it's better to build ad items.
