The third cartridge from the left is 30 caliber and holds just over 13 grains of the little Trail Boss donuts to the bottom of the neck...and, using Benchmark powder,will move a 155 gr Lapua into the high 2600's-low 2700's depending on how long you want your brass to last. Its feeding reliably through two different bolt actions and uses considerably less powder than my .308.
Waiting on the correct barrel extension/bolt to try it out on AR platform but things look very promising on a bolt action build.