Long term update.
Over 160k pellets through the 22.
Over 100k through the 25.
Still running original orings in regulators.
Finally replaced 22 bolt probe o-rings at 150k just because they looked a little tired but not leaking.
Still holding exceptionally tight fps spread through entire shot string on both and accuracy is still spot on as it always has been.
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I have simalar numbers of pellets through my .22 R3 on the original probe o rings too.. have only changed the piston reg oring on that one.
The .25 R3 is getting up in shots now too but seems to eat probe orings.. like a set every 500 shots.. I might machine my probe to ecept 4×1.5mm o oring instead of the tiny 4x1mm orings and see if they last better.