Lyman Borescope

[ChrisNZ]

If you're inspecting Remingtons they'll probably all be the same as the barrels are hammer forged with the chamber, freebore, and throat all being formed at the same time. ..

So you're saying Remington has a dedicated barrel mandrel for every permutation of calibre/cartridge/twist rate?? That would be hundreds and hundreds of different mandrels which would be economically stupid.

The barrels would be hammer forged for calibre/twist rate, then chambered afterwards.
Indirect proof of this is that my gunsmith found a factory Rem barrel a couple of years back with the front of the chamber 40 thou eccentric to the bore.

 

[Brians356]

So you're saying Remington has a dedicated barrel mandrel for every permutation of calibre/cartridge/twist rate?? That would be hundreds and hundreds of different mandrels which would be economically stupid.

The barrels would be hammer forged for calibre/twist rate, then chambered afterwards.
Indirect proof of this is that my gunsmith found a factory Rem barrel a couple of years back with the front of the chamber 40 thou eccentric to the bore.

I'd be willing to wager that Remington does not hammer forge their chambers.

 

[Brians356]

Carbon ring looked terrible with the bore cam. Inspection with Hawkeye showed it was very minor.

That's very interesting, and could explain some of the "huge" blobs and "deep" pits I see in my Borecam. There seems to be an optical effect which exaggerates relief, i.e. makes things look "taller" than they really are.

Would you happen to have a picture of that "bad" carbon ring you could post here, so I can see what you're describing? (And a Hawkeye of the same ring, if you happen to have a camera attachment. )

 

[Brians356]

I'd be willing to wager that Remington does not hammer forge their chambers.

However, I did find this:

"The [forging] process produces an exceptional finish on the end product. The accuracy of the bore and groove dimensions is fairly high and uniformity is maintained in the end product. The hammering process also work hardens the barrel. This process not only cuts the rifling in the barrel, but it can also take care of profiling the barrel and also shaping the chamber, all at the same time. This process is also used as the modern method to manufacture polygonal barrels. The speed of manufacture of barrels is very high, with a barrel produced every 3-4 minutes, which makes it very suitable for mass production."

http://firearmshistory.blogspot.com/2010/05/rifling-manufacturing-hammer-forged.html

 

[Ggmac]

You should see the barrel forge in progress . It does the chamber , rifling , profiling . At least on the one I saw

 

[RockyMtnMan]

Hammer forging is the method used for most mass produced factory rifles because it is very fast.

Though in the above description of hammer forging, I don't think they are exactly right by saying the rifling is "cut" into the barrel. More like molded.

I'm pretty sure Remington uses hammer forging because it forms every part of the barrel at once. Button rifling would be much slower as it requires more steps in the process of rifling, chambering, contouring, lapping, heat treatment, etc. And of course cut rifling would be slower yet.

 

[itchyTF]

I just received one of these last week. There is more glare in the image than I would like. Does anyone have any more tips to reduce glare. I have tried all the light levels. Thanks.

On mine the right edge of the display was washed out. It looked to me that 2 of the LEDs were poking out just a tad beyond the white diffuser ring thereby putting too much light into the camera. I sent it back to Lyman to see if they fix it.

 

[swamp]

Crossbow bolt case came in. Nice case but is to short.

 

[primer popper]

Speaking of cases. There is Cabbage Cases in Columbus, Ohio. They make custom cases to your dimensions.

 

[Ggmac]

If you want a strong case , go to harbor freight , buy one for the axle puller or , dang it I forgot what was in it . I got a nice metal case plus the tool . All less than $40 . The Hawkeye fit perfect , foam and all . I'm tech confused but can email pics.
Gary

 

[RockyMtnMan]

If you want a strong case , go to harbor freight , buy one for the axle puller or , dang it I forgot what was in it . I got a nice metal case plus the tool . All less than $40 . The Hawkeye fit perfect , foam and all . I'm tech confused but can email pics.
Gary

Hawkeye? Did you mean Lyman borecam?

 

[Jet]

That's very interesting, and could explain some of the "huge" blobs and "deep" pits I see in my Borecam. There seems to be an optical effect which exaggerates relief, i.e. makes things look "taller" than they really are.

Would you happen to have a picture of that "bad" carbon ring you could post here, so I can see what you're describing? (And a Hawkeye of the same ring, if you happen to have a camera attachment. )

Sorry Brian, I shot a match with it yesterday and cleaned it up good before and after the match. If I run into the same view in the future I'll try to remember to send you some pics.

Good Shooting

Rich

 

[amlevin]

I'm pretty sure Remington uses hammer forging

Not just Reminton. SIG Sauer, Heckler & Koch, Sako, Glock, Steyr, and Ruger are others that use hammer forged barrels as well for pistols and rifles.

In the world of manufacturing time is money. Every time a part has to be sent to another station for more work, that's an expense. It's all about money.

 

[dickn52]

Hawkeye? Did you mean Lyman borecam?

Torque wrench maybe? They usually come in a sturdy box.

 

[Ggmac]

No mine is a Hawkeye , they're about the same length , my friends Lyman is a little shorter , but still a great case .