Recessed Crown Question

[K9TXS]

I was reviewing some articles on the main website here and came across the rifle below with a recessed crown. The article didn't give any reason for the recessed crown, but I got more curious about it. Could really find a reason for it being recessed as deep as it looks.

Is there a reason that a crown would be recessed this deep?

 

[gunsandgunsmithing]

I was reviewing some articles on the main website here and came across the rifle below with a recessed crown. The article didn't give any reason for the recessed crown, but I got more curious about it. Could really find a reason for it being recessed as deep as it looks.

Is there a reason that a crown would be recessed this deep?

View attachment 1504287

Tuning is one reason some were done that way. We're well beyond that these days, I hope.

 

[Bill Norris]

I've seen some say that the recessed crown was for protection to some degree.

 

[gunsandgunsmithing]

I've seen some say that the recessed crown was for protection to some degree.

The very deep crown as pictured was likely done with more than protection in mind. As I said, it was an old school tuner, in many cases where they were bored to a very specific depth. Not saying the builder put that much thought into THAT one, just that it was really a thing to do it for tuning purposes for a while.

 

[mikecockcroft]

Richard Franklin used to do these and he claims it was a little quieter and threw the sound down range so the rifle was a little quieter for those shooting next to it.
He discusses it and demonstrates doing one in his videos.
That stock looks like one of his designs, perhaps he built it.

 

[gunsandgunsmithing]

Look at a sporter class rimfire br rifle. They still do this because tuners aren't allowed.

 

[natdscott]

Richard Franklin used to do these and he claims it was a little quieter and threw the sound down range so the rifle was a little quieter for those shooting next to it.
He discusses it and demonstrates doing one in his videos.
That stock looks like one of his designs, perhaps he built it.

That is one of Richard's personal long range chuck rifles.

 

[JMayo]

That looks like a break before the holes or the holes are on top.
You can't tell where my break and barrel come together. That looks like a polished difference 2"

 

[Preacher]

Cut's the noise down a bit...

 

[gunsandgunsmithing]

Cut's the noise down a bit...

Not saying it doesn't, but not enough to notice on the ones I've seen and if ya think about it, my tuners are made a little like that. Because of stupid laws, I did not want ANY sound suppression. Gov't gets silly about that kinda stuff. Splitting a fine hair. It doesn't change deciible levels but since sound travels through air, the bbl dumps the noise an inch or two further ahead of your ears, which does theoretically make a difference. No different really than a shorter bbl

 

[Will Henry]

If I remember right (always in question), Winchester claimed that a counterbore two calibers deep and two calibers in depth would reduce turbulence of gases leaving the muzzle. I crown several rifles this way and they shot just the same as all the rest. WH

 

[gunsandgunsmithing]

If I remember right (always in question), Winchester claimed that a counterbore two calibers deep and two calibers in depth would reduce turbulence of gases leaving the muzzle. I crown several rifles this way and they shot just the same as all the rest. WH

More than just open space? I can't help but doubt it has much if any value in that regard but...maybe. Rimfire has been toying with this stuff and more, way more...for a really long time. Not convinced there either but some of them are. Google up PRx tuning or Purdy prescription. Interesting for sure but my testing has not supported it being worthwhile...ymmv.

 

[JMayo]

I have a j j slide on my 22. Its just an aluminum tube 2" wide.6" long. It Screws on the tuner. It tightens up the group..

 

[Bill Rodolph]

The smallbore silhouette shooters used to do that (and may still) but they did it to a greater depth. Shooting offhand, they wanted the bullet out of the barrel as quickly as possible (short barrel) but need the weight on the end of the barrel for stability (long barrel).

There may also be some thought or benefit (very arguable) of the bullet stabilizing before getting hit by any wind, much like a bloop tube sight extension.

 

[VA_XTC_Shooter]

Now they make screw on blast cans for the same purpose Franklin espoused, direct blast away from shooter to make sound less to shooter.
Opposite of how a brake directs blast toward your neighbor.

 

[Jonnyofalltrades]

I did this on a 23" barreled 7mm Rem Mag. Muzzle blast was extremely obnoxious.
Counterboring certainly did take the "slap in the face" effect away. That was on an Encore, so the muzzle was pretty close to the old face.

 

[boltfluter]

I did this on a 23" barreled 7mm Rem Mag. Muzzle blast was extremely obnoxious.
Counterboring certainly did take the "slap in the face" effect away. That was on an Encore, so the muzzle was pretty close to the old face.

Looks like a mod that could be fun to play around with.
Paul

 

[Chilly807]

The smallbore silhouette shooters used to do that (and may still) but they did it to a greater depth. Shooting offhand, they wanted the bullet out of the barrel as quickly as possible (short barrel) but need the weight on the end of the barrel for stability (long barrel).

A friend has an Anschutz 1408 running game rifle that's done that way. The counterbore is quite deep. Maybe 4-6 inches? I think he told me the length of the rifled portion of the barrel is only about 16-18 inches.
It shoots well enough, but no better than a regular barrel.

 

[mikecockcroft]

Richard never said it would shoot any better, just quieter. He never implied it was a tuner of any sort.

 

[Tod Hendricks]

It is a current experiment for me, with a twist. Maybe it will be on the line at SWN, maybe not. ;-)