I have lots of 209 primers but they are all cheddite. I have lots of hulls but they are almost all Remington and Winchester. The problem is there is no published data to load those hulls with Cheddite primers. My immediate concern is 20 ga for grandson’s newly acquired skeet and trap interest. 7/8 oz load in AA hulls, Longshot powder to equal 1200 fps. I’ve emailed Hodgdon and BPI to no avail. Been using 16.5 grs with win 209 primers but all out.