Thanks, gentlemen, but like I said, this is not likely something I can repeat at will. We all have days when the planets coincide and things fall into place as never before.
I'm still adapting to shooting prone with x-stix, but I find it MUCH more conducive to good shooting than sitting which never worked well for me. I always felt unbalanced and awkward with all the paraphernalia around me and could not get a firm grip on the straight stock. Prone gives a more secure and confidence building position.
Now I fire, eject, use the blow tube and lean over to my left to check the shot with my left eye, the long range target shooting the Army taught me as a recruit.
I resisted going prone for years as sitting in the military x-legged position, slung up, has always worked well for me. It doesn't work with a BPCR!
Something that has helped enormously is the fact that I recently had cataract surgery in both eyes and my new lenses, coupled with new glasses has given me back my long range visual acuity. I can see hits on paper at 100m and hits on painted steel at 200m.
But - I find that using the tang sights and x-hairs on my Sharps very tiring and a string of 25 rds without a break is about what I can tolerate. I recently fired 40 rds with a few breaks to change and/or repaint steel and that worked.