I don't know shite about joule creep, had it explained to me in detail, but [...] since forgotten everything previously explained to me
For the benefit of anyone else that's wondering what's going on, joule creep is a phenomenon where guns are more efficient with heavier ammo; they'll do 350FPS with 0.20g (1.14J), but 335FPS with 0.25g (1.30J), 330FPS with 0.30g (1.52J) etc. Essentially the energy level gets higher and higher with heavier ammo. Some sadistic
oxygen thieves bellends knobgoblins people abuse this by passing chrono with 0.20g and then actually shooting 0.30-0.45g BBs with a correspondingly huge increase in power. Deliberately or not this phenomenon is especially prevalent in over-volumed guns like short-barrel BASRs, GBBRs and specifically tuned remote-line gas guns (HPA, Tippmanns etc.).
I approve of sites doing regular spot checks all through the day, using their own BBs, and heavy ones at that. [...] If they're going to do that, they need to be absolutely clear about it so that you can tune for it, and provide them at pre-game chrono as well. [...] If they're really concerned about what over-volumed guns can creep up to by loading heavier BBs, they should be using 0.4g or even heavier.
I appreciate that what has happened with the OP and his friend is never going to feel good but it is a policy that is try to prevent what has happened in the past reoccurring. [...] What I have found at anzio is that chrono stations are available as are a range of weights to test and check that rifs are within limits. [...] [It] would be nice to see a clarification on the sites rules as to how they intend to test in the play area for spot checks, that way responsible players can check their setups and tune accordingly, especially if they are genuinely honest and decent hpa users.
Pretty much exactly these. In more than a decade of play I've literally never seen a marshal doing spot chronographing (even though it's been mentioned repeatedly) so it's good to see that at least someone does it. However, it's absolute bullshit than they don't tell you they'll be chronographing with random BB weights,
especially after you've previously passed chrono. If they want people to pass chronograph at 0.20g, 0.25g, 0.28g, 0.30g, 0.36g, 0.40g
and 0.45g and so on, that needs to be both specified and tested for at the original chrono. Chrono will probably take five times as long if you're going to be testing each gun with seven BB weights rather than one but if that's what they want that's what they'll have to do.
More the point being that an hpa system correctly set up for a given weight should not joule creep excessively with heavier bbs and unless set very close to the chrono limits (which is never a good idea given fluctuations in regulators and differing chronos) should not fail at any weight bb.
This is very much true; HPA guns with significant joule creep are running inefficiently and should be tuned more carefully. The whole point of electronic FCU control of solenoids is fine-tuning - with some experimentation it should be possible to tune the gun to shoot less than 1.1J (or whatever the limit is) with every BB in the 0.20-0.30g range.
I just wanted to tell people on what happened . I won't loose sleep over it lol .
Very much the sensible approach.