Barrel Tester

I would really like to see pictures too. You've got me thinking about this, and what would the requirements be to test a barrel not in a gun.

There would need to be an adjustable collet to simulate the bushing; adjustable slide stop pin for uncut barrel legs; the slide/barrel lug fit should be pretty consistent between manufacturers; an adjustable breach face to accommodate for the different barrel hood dimensions. That would give the 3 point contact and allow for a consistent, measurable gap between breach face and primer without the barrel hood touching.

The real pickle to figure out would be the chamber depth because you couldn't cut the hood length or chamber depth until it was to be fit in the pistol. I suppose you could reload different OAL bullets depending on just how much the chamber depth was set by the manufacturer. But then wouldn't you be introducing quite another variable to account for in the chamber pressures? How significant would that be in 1911s?

Looking forward to the design, thanks.
 
video is useless if it is shot with progressive scan cmos sensor and not a ccd











I'm a competitive smallbore rifle, precision air rifle, sporter air rifle, and air pistol shooter, and the current American Legion national champion in Sporter class air rifle.

There is no point in testing a barrel in a vise. In a vise or fixture eliminates barrel harmonics, that is what your really testing for. When a shot is shot, the moment the bullet leaves the case the barrel starts to vibrate. Mostly up and down, and the point you want the bullet to leave the barrel is when the barrel is in the topmost or bottommost position of it's harmonic. Because there is a little pause at the top and bottom of the wave, that is the best place to have the bullet exit the barrel for utmost consistency. When you have a barrel/load combo that exits the barrel when the barrel is not at the top of bottom most position, it can hurt accuracy and in a competitive situation a barrel tuner should be used. Check out Beesting tuners if your interested.

All this happens in just a few miniseconds, faster than the eye can see. But it's there, and even less on airguns. But it's still there and has to be accounted for.

https://www.youtube.com/watch?v=AqgPu9gSmVc
 
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