I recently picked up a cheap chrono from AliExpress so have been doing some testing to see how my Double Eagle fairs in terms of consistency, but I'm wondering what the benchmark is?
I've done several runs of between 10 and 20 shots and nearly all are between 1-3FPS of one another, but then occasionally one shot may deviate by maybe 10-12FPS. I'm not really sure here if that is an error in the chrono reading or a sporadic inconsistency in the gun.
Here's an egregious example where one shot drops by 28fps, but the variance can be up or down and is usually less dramatic:
I had another example of a shot reading at 307fps, which for a .28g BB puts me well over the UK limit, but I'm struggling to see where it suddenly gained all that extra power from for a single shot.
For reference the gun has a Guarder 100 spring, ZCI hop unit, Macron 60 and Omega nub.
I'll frame this all by saying I don't really have any complaints about the gun in the field, this is all the the name of science/being a geek.