Plated performs more like lead then jacketed, so I like to start low.
That's why I hesitate to use just any data.
Lead bullets and copper plated lead bullets yield very similar pressure and velocity results, so when the weights are the same, the same data may be used for each. Jacketed Lead core bullets come in a variety of configurations. Jacketed Hollow points and Jacketed Flat points of the same weight use the same data. Round nosed, lead core, full metal jacketed bullets of the same weight can also use the same data.
Regardless of what "they" say you're still wrong. Anyone who loads CamPro knows they behave like FMJ bullets.
Based on your CUP/PSI testing equipment?
So what do you base it on? "Pressure signs?" In pistols that are running 15,000-35,000psi you won't see any pressure signs.
The point is that campro's process makes their bullet more similar to jacketed than plated. Although copper is electro-plated and not jacketed, the end result is a layer of copper that's as thick as any jacketed bullet.
.008” plated will be fine for Magnum loads, I used Berry’s 50EA bullets loaded to MAX with Win296 and had great results.
Who makes a thinker plated bullet than CAMPRO?