If you have any winchester standard primers......

they were designed for "Ball powder" and run a little hotter than the other standard primers, so that they will work with the companies powders.

I also used their magnum primers but find that they were not needed with my loads and weapons
to gain any advantage in my loads and powders use over the years of testing.

However, a magnum primer with ball powder is not a bad idea, to get 100% burn and maybe a cleaner shooting table
if you use the very slow burning powders, if using the other brand primers.