P.R.O.O.F. Airgun info?

Good morning!

The newsletter yesterday mentioned "Proof1447 of P.R.O.O.F. airgun fame", and that got me curious.

I went looking, downloaded the files, and that seems to be about it for info still available.

The reddit user said a couple of times "see my post history for development progress posts", but they've all been removed.

There's a rate-of-fire video and a speed-of-projectile video, but they're both set to private now. Can't find any other videos on YouTube or Odysee anywhere.

I really like the idea, feel like this might be a super fun summer project, but the total absence of information makes me nervous. Would hate to waste my limited time and money on a project that's got big flaws, stuff that might be beyond my expertise to solve.

(For context, I've got two Urutaus done and only one works well. That's the extent of my experience.)

Any other info you can share will be appreciated!

M