I've not had much opportunity to do any shooting w/my 95 since it came back from Hatsan factory repair replacing a damaged seal. It still smokes on a few shots and I've cleaned the barrel so I'm not sure where that's coming from but at any rate I wanted to see if I could get numbers close to their numbers on the shot report they sent w/the gun after service. Part of this is to see if my chrony is accurate/in the same ball park as theirs. They were firing Hatsan Vortex rounds at 13.12 gr for an average of 828fps for an FPE of 19.98. The closest I had to that weight was some JSB Express at 14.3 gr. Then, knowing prior to the seal going my gun preferred the JSB Heavy at 18.13 gr, I wanted to shoot a string of those to compare. The numbers:JSB EXACT JUMBO EXPRESS .22 CAL 14.3GRLO - 787.2HI - 813.6AV - 803. 1ES - 26.41SD - 8.610 - 808.49 - 794.98 - 813.67 - 803.76 - 806.55 - 794.14 - 787.23 - 800.62 - 811.21 - 810.9FPE - 20.48JSB EXACT JUMBO HEAVY .22 CAL 18.13 GRLO - 700.3HI - 720.6AV - 711.5ES - 20.31SD - 6.7810 - 719.19 - 700.58 - 710.77 - 715.96 - 700.35 - 720.64 - 708.73 - 713.72 - 711.51 - 713.3FPE - 20.38I used a Chrony Beta Master and the tip of the barrel was about 20" back from the chrony. I would conclude from this that my chrony is functioning properly, or at least in the same ballpark as the chrony Hatsan used whatever that was. Any shot where the gun smoked was a slower shot on the chrony so I'd guess when all this random smoking goes away the strings would just get tighter as far as average, extreme spread and standard deviation goes. I would not interpret that to mean the shots would get faster as far as a hi number is concerned though, just over all.
the only critter I've eliminated lately with air power was the front and rear tire of my car which was attacked by a suicide squirrel.
+1 to Glen's advice....get a chrony....then try reallllll hard not to shoot it!!!