My ears perked up when I saw that Quinn had his bored out for 10mm magnum, then, as it always does, the realization set in that there are few 10mm JHP projectiles that are designed to work at 10mm Auto velocities, and zero designed to work at 10mm Magnum velocities.
You could get a 200 grain or maybe even 220-grain hardcast load stepping out at some pretty good velocities though...