I tested the 1.75 oz box again today suppresses and not. The numbers are different than when the weight was on on top of the slide. Sometimes by more than 100 RPM. The average for 1.75 oz unsuppressed HV was 1415 RPM but Subs were unreliable.
It looks like the 1.5 oz numbers are the sweet spot for HV and subs unsuppressed when using back of the slide weight. I'm going to need to verify all of this again.
1.5 oz weight on top, 1.5 oz weight on the back, 1.75 oz weight on top, 1.75 oz weight on the back, suppressed, unsuppressed, subsonic ammo, HV ammo. 3-10 rds averages for each. This hurts my brain.
I do know that the weight on the back looks better and would be easier to change around. I'm glad root sent 2 boxes. I guess the ideal weight is one that all configurations work.