Kieth,
I worked up a load that shoots 1/2 - 3/4 inch using range brass I picked up(RP). I got 120 PMC Silver FACTORY rounds in a trade and pulled 20, dumped the powder and loaded with what I worked up. NOT sure of primers used in the factory stuff and Dont know the safe way to remove them to replace with the Winchester primers I used..This could be QUITE a different trip to the range than the last..all I can do is see.
If things dont work out I'll have 5 Factory boxes of The Silver PMC with 130 GameKings up for sale..(I am using 110grain TTSXs)