You know, I'm pressed to buy one but I'm hesitant to touch my pockets...primer pockets that is

I was told by someone once to just stay away from it as they are already more consistant than we can make them. I don't doubt they ream em perfect,
I'm more concerned with the depth of the pocket base to the far side of the flash hole inside the case. I don't know how to measure that and in my tiny brain I imagine it's like a nozzle. More or less distance there can create a wider or narrower flame. I really don't know if that is valid or not. All the tools used to clean up pockets measure off the case head, although that's an easy way to use a tool I'm not sure that's what measurement matters as what comes out the other end is what we're really focused on.