Check out Nosler.com they have load data published on their website. I would think the 140 gr. Partition would work jut fine on Elk. Here is their date for the 140 Partition. Powder Big Game 43.5 gr. MV. 2760 Primer WLR COAL 2.800 Case was a Nosler. This was indicated as the most accurate but there are more loads listed.
Thanks guys, my son and myself pride ourselves on clean 1 shot kills. We will be using Barnes, Partitions or the Accu Bonds. We do reload all our shells so once I get the barrel from Carlos it's breaking in the barrel then off to the range.