Any good bore lapping videos?

[STS]

Dont discount that. Its diatomaceous earth and works well

JB may be an abrasive but it's no lapping compound. How many barrel manufacturers lap their barrels with diatomaceous earth?

 

[Prose]

Glad to hear that reiterated. I swear that was what we were paying for.
That's pretty labor-intensive.

Curious how fine the high-end barrel makers take their lapping procedures.
KG-2 (polish) is 1200 - 1400 grit per their website. And it is DE IIRC.
I always thought JB was garnet but my memory is being abraded away by time.

There is a thread with the specifications of many abrasives that has the answer to this.

 

[Dusty Stevens]

JB may be an abrasive but it's no lapping compound. How many barrel manufacturers lap their barrels with diatomaceous earth?

None lap their barrels with it but plenty polish inside and break in leades with it. It can be used in place of the 320grit silicon carbide that the unexperienced could use to ruin their barrel in a few strokes with

 

[STS]

Ruin a barrel in a few strokes with JB? Not a chance. I've been using JB for nearly 50 years and used it in a pickup load of benchrest barrels back when I competed. It's not going to do anything but remove some carbon "in a few strokes."

 

[Dusty Stevens]

Ruin a barrel in a few strokes with JB? Not a chance. I've been using JB for nearly 50 years and used it in a pickup load of benchrest barrels back when I competed. It's not going to do anything but remove some carbon "in a few strokes."

Thats not what i said

 

[dhagerty40]

This article explains a lot concerning fire Lapping.

Fire Lapping Barrels? Yes? No? What you need to know before you do it

From the pages of The IHMSA News, Shooting sports, hand gun, ammo, cartridges, xp 100, reloading, firearm, cast bullet, bullet casting and more information articles

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