And the chrono data . . .. I really expected more power, but thats ok. Shoots great, cocks smooth (more on that), and it was fun watching the SD settle in a bit.
I set up at 20 yards, with the open sights, and started my session. First 50 shots with CPHP 14.3:
Max 679.8
Min 581.4 (one weird shot skewed this string; made a funny sound)
Spread 98.4
SD 15.1
FPE 13.8
Second string of 50:
Max 675.9
Min 629.9
Spread 45.9
SD 8.5
FPE 14.0
Third string of THIRTEEN (13):
Max 665.7
Min 634.5
Spread 31.2
SD 8.1
FPE 13.6
I have read that the vortek 25mm piston seals are tight, and will loosen up with break in. I understand that velocity should increase, and if it doesn't, the seal would need to be mechanically narrowed. Having NO experience with springers, I can only attempt to educate myself by reading what others have posted.
Now, why a 13 shot string? Isn't the number 13 unlucky? Why yes, it is. Not only did I break the cocking lever, as cautioned by TinBum Tuning online, I also buggered the stock a bit inside the lever groove.

I should have known. The lever didn't quite close correctly, I assumed the new breach seal had to seat, and that it would settle in with a bit of use. But no, it broke.
It looks the the delrin sheath may obstruct the lever from going in properly? Any ideas?
I will now be ordering a new cocking lever arm, and probably the rivet/stud as well, so I am sure I will have hat in hand with some advise on that repair. I would also appreciate any input as to the FPE numbers my first few shots generated. I am all ears!