RE: #6 SHOT
I have used 3" Wenchester #6 shot for the past 30 years and have taken several birds at 45 yards and a couple at 50 yards.have only had one bird not go down.
so yes they will do the job.
I like to get them closer than that if possible.at this stage in life I like 25 yards if possible.
If not most times I will let him walk and go back the next day.it's all about getting them to show off for ya, right!!