Hand lapping a barrel

WAREWOLF

WAREWOLF

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Hi I was wondering if it is worth hand lapping the barrel of my rem 700 5R milspec

I know that some barrels will benefit from it but since this is an 5R barrel is it beneficial for me to do it or is it not worth it. And how would it affect accuracy.

Thanks in advance
 
wouldnt touch it, hand lapping, CAN be good for barrels, but its a practiced art, if you dont know what your doing its a quick way to ruin your barrel, being an OEM barrel, you probably wouldn't see any benefit from it any way other then maybe a bit less copper fouling (which in my 5r has never been a problem)
 
nothing fancy, "break in" is a very touchy subject round these parts, some do a 6 day ritual and dance while others just shoot the thing. personally for me when it comes to a factory rifle - unbox, clean, shoot 1, clean, repeat 5x just to make sure there are no little burs etc from the machining, then clean when accuracy drops off, my 5r is sitting around 680 rounds since the last full cleaning, i oil the bore for storage but thats about it
 
ultimate_monkey said:
nothing fancy, "break in" is a very touchy subject round these parts, some do a 6 day ritual and dance while others just shoot the thing. personally for me when it comes to a factory rifle - unbox, clean, shoot 1, clean, repeat 5x just to make sure there are no little burs etc from the machining, then clean when accuracy drops off, my 5r is sitting around 680 rounds since the last full cleaning, i oil the bore for storage but thats about it
Click to expand...

Thanks that's what I was thinking I would do. For the quality of the 5R barrel I figured it wouldn't need much for a break in.
 
Do not lap a quality barrel! All quality barrel makers I'm aware of suggest break-in, which includes more frequent cleaning initially with many takes on this.

Regards,

Peter
 
Not trying to be a d1ck but you simply have a factory Rem barrel with 5 lands.

No more no less. Some shoot, some dont. there is only one way to find out.

Lapping occurs long before you get the rifle. Anything you do now can dramatically alter the interior dimensions of the bore. If the barrel doesn't shoot, lapping will not help.

If the bore fouls badly, lapping you can do at home, will not help
Jerry
 
I lapped under the threads constriction in My Ruger 357 Mag revolver b/c that was the reason my cast bullets were leading the barrel. It helped a lot, no leading anymore.
If you have nothing to loose b/c barrel s***k you might as well lapp it with say 600-800 grit lapping compound.
GR8 $.02 worth....
 
gunrunner8 said:
I lapped under the threads constriction in My Ruger 357 Mag revolver b/c that was the reason my cast bullets were leading the barrel. It helped a lot, no leading anymore.
If you have nothing to loose b/c barrel s***k you might as well lapp it with say 600-800 grit lapping compound.
GR8 $.02 worth....
Click to expand...


Fwiw if a rifle barrel would get lapped with 600-800 grit
The barrel will become to smooth and copper foul terribly.
Anything over 280 grit is to fine for lapping a rifle barrel.

Barrels get lapped before chambering and need to be cut at the muzzle a bit
Leave your barrel alone and if you want a lapped barrel buy a custom.
 
Hand lapping is not going to make an "economy grade" barrel shoot like an F class. However, it CAN enhance the performance of one. All manufacturers have their own way of "lapping" and its best to inquire about how exactly they do it, if they're willing to release that information. Some bores have an inconsistent dia. from breech to muzzle. It's more common than you think in out of the box guns. Lapping is a good way to even that out, IF it's done properly. For ultimate results, like the other posts say, Lapping is something you want to do before your chamber is cut and fit to your action. This is of course my opinion, and this is a touchy subject for alot of people!
 
There is the process known as "fire lapping" whereby bullets treated with increasingly fine abrasives are fired. There are those who think it is a good idea, others disagree.
 
Used Tubbs final finish and it has dramatically improved cleaning and reduced fouling. Barrels that patch with friction before are smooth after. As for accuracy improvement the results vary but little noticable improvement have been my experience. If you feel the need I would use this product again. But before you do just shoot it and see what you will get. My 2c.
 
"...worth hand lapping..." Whatever for?
The 'Milspec' is a marketing term for barrels that didn't pass tolerance tests for M24 barrels. Good barrels just the same, but lapping one isn't going to make any difference.
 
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