I've conducted a lot of Piezo pressure measurements. I've also conducted a lot of velocity measurements.
Prior to conducting Piezo pressure measurements, I had a favorite load that was MUCH faster than the reloading manuals.
The evening that I conducted Piezo pressure measurements on Proof loads I went home and pulled the bullets from my favorite loads.
The reality is that (assuming reasonable propellants) Velocity = Pressure. If you are getting way higher velocity, you are getting way higher pressure.
Blowing up a gun when you are planning it and recording the results can be fun. Blowing up a gun when you are holding it is not.
If you care about your safety, get a good chronograph and load reasonable components to reasonable velocity.
