Arizona desert quail have been my main bird for about 25 years now. With a 20ga I like 3/4 or 7/8oz loads of 7 shot when shooting reloads. I also use 7 1/2s in 7/8oz factory loads. The 7s and 7 1/2s will greatly reduce losing birds compared to 8s and 9s. These little guys are tougher than they look and need better penetration to make sure they are anchored. Chokes I use are Skt/LMod in both 20ga and 16ga(which I also use a lot in 2 1/2" 7/8oz loads.