If I were in your shoes, I wouldn't want to offer non-standard options to the masses either.
Too many people think that it's perfectly safe to go beyond the 62ksi loads in their Manbun.
The discussion about acceptable pressure vs excessive pressure happens monthly around here and some people just don't get it.
I've had the privilege to manufacture ammunition as a job. Along with that, I used pressure test barrels daily. If the average handloader could see just how quickly pressure builds and how quickly it goes from average safe loads, into proof loads, it would scare the shit out of them.
To get them to understand the amount of pressure needed to destroy an action would take a miracle.
For discussion purposes, and to educate those that aren't aware, most of the dual port actions are built to fire the 22 or 6mm PPC and the occasional 6mm or 30 BR cartridge.
Most of the shooters using the PPC are very meticulous. They use mostly N-133 for the PPC and to have a different powder around would be blasphemy.
The 30 BR shooters have mostly H-4198 or LT-30.
I've only ever seen a handful of BR shooters that had more than one powder around at a time.
Average Jo-Bob probably loads at home instead and has 20 different powders on his shelf. It's pretty easy to grab the wrong type if he's distracted or inebriated.
As a manufacturer, you can't control Jo-Bob or his buddies while they are trying to squeeze every single foot per second out of that Manbun or the PRC.
Come on man, it's only a little difficult to lift the bolt. And, and, and, the primer isn't completely flat yet...
It's just not worth it to offer the custom ports to Jo-Bob and Billy-Rae.
@karagias I'm gonna PM you.