RE: 300 WBY Mag Elk Load
Ka-Pow:
If you can get your hands on some Norma MRP, I would go with a 200 gr. Barnes X, Nosler Partition, Swift A-Frame, TBBC, or Winchester Fail-Safe. With Norma MRP it is possible to launch a 200 gr. projectile 3,150 f/s 4,406 ft/lb. Good luck.