All 356 bullets I tried went through paper sideways. My bore slugged at 356, and the 358 mold fixed that issue. Unfortunately the ogive on that mold is set up for 38 special, and has to be loaded very short to chamber. Understand that my 75 is nearly 100% reliable when loaded at 1.01 with this mold, and I'm not alone on this.
But that isn't my question, wondering if the P01 is similar or has a more generous leade?