There are no official reports of field performance from any of the most recent cartridge developments yet, but in the past year, four new cartridges have been designed and are in chambered rifles.
The 416 Murphy, 411 Clopton, 358 Nukalpiaq and 423 Caprivi have all been built into rifles. Mostly they have taken in excess of one year from start to finish, not too costly time wise from conception to shooting model. I'll be testing and developing data for the last of the four over the next couple of weeks. This 358 shows a lot of promise even though I may never learn to pronounce the name correctly. I'll let the new owner elaborate on the rifle but the first loaded rounds will be fired this week, More news at eleven. I hope my calculations were good.