IMR 4064 has long been my favored powder for 50gr and 55gr varmint loads, but for the 60gr Partition, found 38gr of IMR 4350 did much better. R-P cases, CCI 200 primers.

One side benefit in my rifle: The 60gr Partition load shoots to within a quarter inch of the 55gr Btip zero @ 100 yards.

If three or more people think you're a dimwit, chances are at least one of them is right.