Thanks Steve.
Some recent data. averages from X shots, FWIW. OAL 1.14
147 gr. HP Xtreme. 3.5 gr. 572, 767 fps 10 shots, SD 14.1 G19
147 gr. HP Xtreme. 3.8 gr. 572, 805 fps 5 shots, SD 17.3. G19
147 gr. HP Xtreme. 4.18 gr. 572, 931 fps 10 shots, SD 13.3. G34
147 gr. HP Xtreme. 4.0. gr. 572. will update
124 gr. HP Xtreme. 5.0 gr. 572. 1061 fps 8 shots, SD 12.8. G19
124 gr. HP Xtreme. 5.4 gr. 572. 1075 fps 9 shots, SD 20.1. G26
124 gr. HP Xtreme. 5.4 gr. 572. 1107 fps 9 shots, SD 13.5. G19
124 gr. HP Xtreme. 5.4 gr. 572. 1355 fps 8 shots, SD 18.2. KelTec Sub 2000 16"
124 gr. HP Xtreme. 5.8 gr. 572. 1172 fps 9 shots, SD 11.4. G19
124 gr. HP Xtreme. 5.8 gr. 572. 1405 fps 9 shots, SD 9.0. KelTec Sub 2000 16"