I agree.

Try some more ammo in the gun to make sure it is not
a gun problem. One of the primers is definitely less indented than the other but as you say, which is the misfire !!!

Before trying the same cartridge int he gun again, I'd compare the shaking the powder noise between the misfire
and a new one, just to make sure their is enough powder in it.

And then after firing a couple of NEW rounds in each barrel to determine it is NOT a gun problem, try the misfire again.