Well Lee, i made it out this morning with some Lane tube filled with 140g of Blackhorn powder. The primer used was W209.


From the muzzle of the Knight Extreme to the middle of the clock was 8 1/2 feet. First the 200g Shockwave in the provided blue sabot was shot.
Speeds were 2389, 2398, 2415, for an average of 2400 fps.

Then 250g XTP in short black Harvester sabot was shot. Speeds were 2298, 2298, 2283, for an average of 2293 fps.



That old chrony of yours seems to work. My clock isn't a chrony.