chokes? in Shotgun Sports Posted October 31, 2007 full, at 25 the targets can be 40-50 yards befor you know it. preferable a extended choke with a parralell section. defintly patten though, i like the 1 target 5 shots. this shows if your load is consistent. patteren at 40 yards. then decide if your factroy choke works. if not then go aftermarket.