Pretty interesting since I read that you can get 10 shot @ 144 fpe.. I turned the hammer to get roughly 135 fpe and this is what I got. I stopped at 21 as this is 3 magazines. These pellets aren't weighed or sorted. 23 fps ES which is pretty cool for not sorting though anything.
JSB 81.02 gr 300 Bar fill. Caldwell Chrono with app.
1.879 / 139.02 8. 865 / 134.63 15. 856 / 131.84
2. 878 / 138.71 9. 862 / 133.70 16. 865 / 134.63
3. 871 / 136.50 10. 870 / 136.19 17. 867 / 135.25
4. 875 / 137.76 11. 865 / 134.63 18. 871 / 136.50
5. 873 / 137.13 12. 866 / 134.94 19. 871 / 136.50
6. 866 / 134.94 13. 865 / 134.63 20. 864 / 134.32
7. 867 / 135.25 14. 868 / 135.56 21. 859 / 132.77
JSB 81.02 gr 300 Bar fill. Caldwell Chrono with app.
1.879 / 139.02 8. 865 / 134.63 15. 856 / 131.84
2. 878 / 138.71 9. 862 / 133.70 16. 865 / 134.63
3. 871 / 136.50 10. 870 / 136.19 17. 867 / 135.25
4. 875 / 137.76 11. 865 / 134.63 18. 871 / 136.50
5. 873 / 137.13 12. 866 / 134.94 19. 871 / 136.50
6. 866 / 134.94 13. 865 / 134.63 20. 864 / 134.32
7. 867 / 135.25 14. 868 / 135.56 21. 859 / 132.77