If you contact Hodgdon powder they will be able to tell you as they also make Winchester powder.
7:00am to 5:30pm Central Monday-Thursday : 913-362-9455
I located a bit of data for 3/4 oz loads in 3" .410 in both Rem + Fed cases in Lyman #4 shotgun manual.the factory 3/4 oz loads knock the snot out of grouse compared to the 1/2 + 11/16 oz loads.............Harold * I have a near full 8 lb can of Win 296 I used to use in my .22 Hornet way back when ,I'd like to put to use!