What could cause this ?
Out of the box my cricket was running at a steady 887fps ish
220 fill for 69 shots
Coming off the reg at about 110 bar
A year later it’s running at around 870 fps
220 fill for 59 shots
Coming off the reg at 110 bar
Is this just it bedding in ?
What should I adjust if anything..
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Have you had any o-rings replaced? I’ve already had to replace the small o-ring inside the barrel that seals the probe. If you had an air leak there, then you would lose some air and velocity at every shot. Same goes for the o-rings that seals the barrel and tube/valve to the breech/receiver.
I’m not sure about this, but I’ve read somewhere that having the hammer spring too tightly adjusted actually lowers velocity AND wastes more air. Like I said, I’m not sure about this, but it is easy to test, just back it out a little and see if velocity increases.
You probably need to get in there with a mop
I use jb paste and then hit it with polishing paste after that. That’s what in would do. Fixed my accuracy issues in a hurry.
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Ok.
After roughly every 300 shots I need to clean the barrel
I do this with a pull through and balistol on patches , I pull through till no more dirt shows then pull through with dry patches.
Still Fps and shot count is down on last years
220 fill for 69 shots
Coming off the reg at about 110 bar
A year later it’s running at around 870 fps
220 fill for 59 shots
Coming off the reg at 110 bar
Is this just it bedding in ?
What should I adjust if anything..
After reading all advices, deep clean the grooves of the barrel, whips are not going to do the job, when grooves have lead build up they cause drag that will lower fps and use more air and most time accuracy not affected. Also after brake in as noted by Coda it will settle down —-> Now you have a new reference point “broken IN “.
I have seen a velocity change on most of my regulated guns as the regulator settles in before it stabilizes at maybe 500-1000 shots and mainly they seem to drop slightly in velocity. Not sure why your shot count went down.
Yes.. Test done indoors.
Did you have same temperature conditions now and one year ago ??
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Ive just done this myself billy lowerd hst, power as dropped slightly but with reg pressure higher against the pre load getting a whole mag worth of extra shots. my thinking is air pressure behind the valve is shutting the valve off faster so not as much air going through no produce the shot needed after a bit of tweaking here and there is running very very consistent so my theory and its only theory billy would be if u increase reg pressure slighty and kept your pre load where its at you wouldnt waste as much air but keep at the fps you was getting if that makes sense we went through the same procedure with the rapids if i remember right where we was thrashing the reg to gain power but at same time losing shot count hope fully the lads with lathes will be knocking out reg testers soon think blod just needs to write a program for his cnc lathe to do it time will tell but are fac .25 s now running vey very consistent 906 to 907 with 5 mags off a 220 bar fill . Are sub 12 cricket is a whole diffrent story tho although very very accurate still is not very consistent over the chrono with a spread of 15-20 fps but with out the reg tester all down to trial and error atb dave