A lot of things could be argued such as the fact that you seem to think that you know more than the propellant's manufacturer. A.O.'s personal experience not withstanding, a MAGNUM primer or WLP primer is required for H110/W296. Then again, everybody is free to do what they feel is best and take responsibility for the results. It (magnum primer)has been recommended by the manufacturers since the late 1970's at least for use in .357, .41 and .44 Magnum loads.

For those who happen to read this thread, you can either take A.O's recommendation or the manufacturer's, which ever you deem is more reliable. You pay your money and take your chances.

Bruce