Wohaa, 13bar a shot. And how big is that tank? Would be quite happy with that air consumption. Savage uses around 50bar at 1000J tune.
Over stabilization is a myth, guys are shooting .223 on 7" as fast as the bullet can take it without exploding right out of the muzzle without seeing over stabilization. Ag speeds are nowhere even close those rpm levels. Marko
Of course you are right on this Tom but borderline between stabilizing and unstabilizing is not that clear. Some calculators relay on factor 1, some others 1.5, maybe use different formulas and finally you don't really know without testing.Then, completely another thing is so called over stabilizing. There is no need to spin the bullet over stabilizing speed but it is pretty hard to judge when there are a lot of different weights and lengths in bullets for each caliber.Even if holes are oval there can be so many reasons. I wouldn't speak over stabilizing before checking everything else first.Over stabilizing is a myth to me too especially in AG speed range unless other proved.I have .338 which I'm shooting about 340m/s speed max. Twist is 1:10, with that speed it gives the bullet some 75 krpm spinning . Bullets are exactly 1" long and stable. But, it is a center-fire match barrel. Where the muzzle velocity is about if not over 2.5 times higher. So is spinning speed. If that over stabilizes the bullet I think it would have different twist rate.It is TrueFlite ultra match grade. I believe it is known brand for someone.
I doubt you have seen that video before... I just published it, some minutes ago.By the way, it is slowed down to 10th of original speed. If there are two blasts I think we could see it.
I know, if you want a sensitive one, use big loudspeaker.Where do you place your "microphone"?
Have you ever tried with a strain gage glued onto barrel, near port area?
I'm very impressed with your audio capture, a great diagnostic tool. Tom