Ok dont take this the wrong way but looking to bust dove and quail at 60 yards is not the answer.
If the dove are flying by you at 30k feet change your location. water,feed and roost they have to land for each of them. Dove hunting afer sept 1 can take some work to find the X.
Calif quail has sucked all over for most folks. Other types of of quail seem to be doing better. So maybe change up what you are doing and chase after some Gambles. If you know where some quail are change up your method. We have some weather on the way tomorrow, try after the storm. After you bust them up the first time work the singles, sometimes they hold better. I am guessing you do not hunt with a dog, this can change how they hold too.
Use your head and out think them. Some years you can just go blast away and get easy limits but this is not that year.
Keep in mind the idea on chokes is to give you a pattern that matches the distance you shoot birds at and the useful energy of the shot size you are shooting. 7 1/2 shot falls on its face at 60 yards. Keep shooting your mod choke.
I shoot a mod choke for quail and dove both. If i am using a double gun i run a mod full so my follow up shot can have a better pastern at a bit father distance. On ducks i shoot a Mod choke almost all the time, That gives me a full type pastern with steel shot. ducks with their feet down are easy to hit
oh and camo for dove? really?