What do you think about a revolver in 300 AAC Blackout?
It could be in something like the Ruger GP100 with moon clips or something like the Ruger Blackhawk without the need for moon clips.
The brass length difference between 357 magnum and 300 AAC is only 2 mm so the cylinder wouldn't have to be much longer. It would probably look similar to the Taurus Judge type revolvers that shoot 410 shotgun shells.
One advantage a 300 AAC revolver would have is longer range and better accuracy than a 357 magnum revolver.
I handload for both 357 magnum and 300 AAC Blackout. When it comes to bullet weights and velocities of projectiles both calibers are almost the same. Lots of times they both use the same types of gun powders and almost the same powder charges too.
One big advantage 300 AAC has over 357 magnum is the abundance of cheap 223 brass that can be converted into 300 AAC brass. Once fired 357 magnum brass costs 2 or 3 times more than once fired 223 brass.
If manufacturers can make revolvers strong enough to handle 454 casull pressures they shouldn't have a hard time making them handle 300 AAC pressures even if they could only make it with a 6 shot capacity.
The cost of the 30 cal projectiles might be higher if you are using factory jacketed bullets, but if you cast your own lead projectiles and powder coat them or use gas checks the cost is basically the same as 357 magnum, but you have the better accuracy and longer range capability with easier to find brass.
Just something I wish for in 2016