Back in the 199o's I started loading 7/8 oz. loads and at the time there was not a wealth of data published out there . Because I always used 700x powder I called Dupont Powder Co. and they connected me to the Ballistics Lab . I told the lab tech what I wanted to do ,he took my info and said he would send me a list of loads the next week . He did I reloaded that load until 201o. Since then I have purchased cases of shells ever since . I would call Winchester Powders parent company and try to talk to the Ballistic Techs that create the loads . Tell them the components you would like to use and I am sure they will give you a wealth of loads . I am retired now and plan to start reloading soon as I shoot these 16 cases of factory loads. 7/8 oz. loads break them just as good all the way to the back fence . Good luck !