A couple of months ago I tested substitution of Wolf LP Magnum for Winchester LP in one of my pet W231 loads using a 200gr LCSWC in a .45ACP. I reduced my standard load of 5.8 gr to 5.2 and tested 5.2, 5.4, 5.7 and finally 5.8 gr. The 5.2 through 5.7 loads developed a bit more velocity with the magnum primers. The 5.8 load was slightly less. Also, the SD was greater with the magnum primers on the lighter loads but was pretty much the same on the 5.8 load. Accuracy for all loads was comparable. Let me know if you want all of the details and I will be happy to send them.
I hope that helps,
Frank