No such thing as hijack, just more information!
Here are some after tune results, around 500 shots had gone through it after the initial post. Must have burn off some lubricant or the cooler air is affecting it as the FPS are down slightly. What is extremely good is the spread (deviation) at under 10fps for either pellet tested. If a tune is to make an airgun more consistent, than I achieved my goal. I suspect as the temp changes and I shoot more, the seal will break in. I am encouraged with the 60 yard accuracy so far, I've not experiences any of the lock-up issues some others had noted.
Crosman Quest
CPHP 7.9...... Beeman HP coated 7.1
851.8 ......... 889.8
855.0.......... 883.0
856.5 ..........880.2
859.3 ......... 885.4
854.9 ..........884.9
850.7 ......... 888.0
857.5..........885.6
852.8.......... 882.3
853.4...........881.3
855.5...........882.1
Average
854.7..........884.24
Average Muzzle energy
12.82..........12.33
High FPS
857.5..........889.8
Low FPS
850.7...........880.2
Spread (deviation)
6.8..............9.6
Although not posted, a little later I shot CP pointed 7.9 grain pellets. Same weight as the CPHP's but they shoot as fast as the lighter Beemans, so the speed is Beeman speed but foot -pounds of energy increase over either of the other to 13.71. These are the ones I've been using exclusively in it lately, and have been as noted above, accurate to within a 2 1/2 inch circle at 60 yards. (one of these days I am going to have to try some short 25 yard targets just to see how tight they are there at the "typical" test range).
I also broke the front sight off and made a muzzle break for it out of galvanized pipe. Tightened down some screws into the holes for the rear sight and adjustment wheel ground them flush and re-blued both with Tetra Gun cold blue (stuff works great). Below is a pic of it and the cat prior to the broken sight.
