Thread: Resonance, ringing, recoil, smooth trigger pull and brakes

Sounds like a handful under one heading, however I had a play, collecting vibration data, measuring acceleration and G's on my gun, with and without a muzzle brake and found some other interesting stuff when I looked at the data.

Grab a coffee, this will take a while. I recently purchased a set of Recovib sensors to analyse a vibration problem at work. I was also aware of a friends work with recoil... these sensors were good to 15G so I though I would have a play.

This is one of the sensors... it attaches to the action using magnets, I attached one to the side of the action



Here we see the 6 shots, first 3 with the muzzle brake and last 3 with out....Blue "X" is inline with the barrel, green is "Y" Vertical and brown "Z" is horizontal. The acceleration with the brake is 15/10 and 8 mm/s/s without the brake it is 17, 15 and 13 mm/s/s... quite a measurable difference.



This one is the same data but instead of measuring acceleration it measures displacement or how far the rifle moved (below the line) 22, 22 and 31mm with the brake and 33, 31 and 34mm without the brake.




Where it get interesting is these next two, with and without the brake. recall reading a article... I thing it was a Ruger but maybe mistaken.. it had a small adjustable weight at the end of the barrel that you could tune out vibration... I think it was generally considered a gimmick however when you look at the below, you can clearly see with the brake, the barrel resonates and not without... interesting and warrants more thinking




The time in this window is 1/100s of a second from trigger pull, I think primer igniting (small blue peak) and combustion (big blue peak)... what is interesting with this is how smooth the trigger pull is... this gear very sensitive and would detect anything that was not smooth as...


Complements to the shooter... not me. This is the nearly one second before the shot... the flat lines say it all