Guys, this sounds like catch 22
I have to have a mould to slug my barrel, to buy a mould the right size??
Or I have to buy a box of lead balls in some size a bit bigger?
When I did my .357, I used a .490 round ball of pure lead (its all I had) and beat the heck out of it to get it started. I think the desired method is to use a pure lead ball just several thousands over your caliber.