@Dasniper X5, Manufactured april this year. 3.5 Titegroup, 1.135 OAL. 1093 avg FPS, ES 5, SD 2 from same headstamp brass, 5 shot string. after those numbers i didn't feel the need to keep going. this puts me @147 power factor, which is higher than most like. But it is super consistent and super accurate with this recipe.
i could probably play with OAL and drop to 3.4 or 3.3 and drop that some, but don't feel the need to. With this load the gun cycles fast, and is not snappy, i can very easily keep the 6MOA romeo dot in the window with this.
Also the .357 show land/groove marks clearly on recovered lead, the .356 was super light but visible.
Edit: For the record i shoot this out of mixed brass for matches, i only sort by headstamp for load development to reduce variables.