You stated a 456 bushing. Are you weighing your powder drops, or are you just guessing about the weight by the bushing chart? Before anyone can make a recommendation about swapping primers around, are you sure you have the right amount of powder to start with? Using conservative data for the "hottest" primer listed might keep you out of trouble. Two hot primers would be the Federal 209A and the CCI209M Magnum primer. I'd check that data first and go from there. If you are not sure, I'd strongly recommend contacting the powder manufacturer and asking for advice. The Rio G-1000 is listed on the Hodgdon site, but not with the Windjammer wads. There are also Rio primers with other part numbers, so you need to know which ones you have when you call.
In ANY event, be sure to weigh your powder drops!