The difference in performance of bullet weights from 240 to 250 grains is really pretty minor. It's even smaller between 245 and 250. So the Beartooth Keith bullet should prove pretty satisfactory for you. BTW, I contacted Remington about the availability of their 246 LRN as a component, and was told it was "not listed". If you want a RN, you'll likely have to find a Lyman/Ideal 429251 or 429383 (nominally 250 & 240 resp.) or other make equivalent mould and cast your own.
Happy shooting,
Larry