fire lapping

Well the main thing that we need to know is what problems or deficiencies are you trying to fix or eliminate? Is it new? used, round count etc.?
or a recent remake?

If you have an original chances are there have been quite a few rounds through the barrel with some erosion. These are not the barrels that should be engaged in that treatment.
Now if it is fairly new and rough this might work for you.
 
POP":19696wg9 said:
Well the main thing that we need to know is what problems or deficiencies are you trying to fix or eliminate? Is it new? used, round count etc.?
or a recent remake?

If you have an original chances are there have been quite a few rounds through the barrel with some erosion. These are not the barrels that should be engaged in that treatment.
Now if it is fairly new and rough this might work for you.


I have a 1955 Post Korean Garand with a National Match barrel from CMP. Don't think it has many rounds through it. The bore is really in good shape. The muzzle is really sharp.
 
I would use JB's Bore Paste followed up with a good cleaning.

JD338
 
I agree with Jim. Remember fire-lapping is an extremely aggressive process!
 
I don't think JB will do this bore justice..... It shoots 2 inches at 100 with handloads... think I'll leave er' be. :wink:
 
Yeah, if it is shooting 2" groups at 100 with open sights, that is pretty good! Sounds like a good bore and solid barrel/rifle. Why were you thinking of lapping it? Scotty
 
beretzs":tqd5fqxt said:
Yeah, if it is shooting 2" groups at 100 with open sights, that is pretty good! Sounds like a good bore and solid barrel/rifle. Why were you thinking of lapping it? Scotty

I noticed at the muzzle the lands and grooves looked ruff... the machining.
 
company call superior shooting input.... on Tubbs system....

Sir
First of all let me explain what our Final Finish kit is. We have
impregnated these bullets with a abrasive grit compound. What this is
doing is when you fire these bullets it is acting like sandpaper. You
start with a rough grade and work your way to a fine grade to polish your
barrel. With the barrel smooth and the tool markings gone it will make it
easier to clean and you will see this when you start to use the process.
If you also use the Throat Maintenance System in conjunction with the
Final Finish we have actually found that it will extend your barrel life
by a small percent. It may take an extremely small amount of the no-burred
but not enough to damage it. If you need any further help please let me
know.
 
I have used the Tubbs Final Finish system and it worked extremely well. My groups shrunk and it was much easier to clean infact the patches went thru much smoother after the Tubbs process.

I would not use it on a good shooting rifle but if you have a rifle that is not accurate and especially if it fouls copper it is worth a try. Do not let the barrel heat up when lapping. I could only shoot 3 rounds and then it was hot. So I would clean every 3 rounds and shoot 3 again and so on.

The polishing compound on the bullets is very fine and is not going to damage the barrel unless you get it too hot.

Also keep the barrel completely clean when doing the process because the compound does you no good if it polishing copper fouling instead of the lands.
 
Last spring I bought a new Remington Model 700 SPS in .308. I bought this SPS with the intent on shortening the barrel to make a 20" SPS, so before I ever fired it I had the barrel cut and recrowned to 20". This barrel has to be the worst barrel I have ever had. It would copper foul so horriblly in as few as 5 shots I would literally spend days cleaning the copper out. I tried everything I could think of and finally bit the bullet and bought a Tubbs Final Finish Kit from Midway USA.

The negative to this procedure is that it will lengthen the throat (at least it did on my .308 by .060" if I remember right). However after I shot all 50 of the Tubbs Final Finish Kit (cleaening after every 10 rounds like recommended) I can now shoot 50 rounds and only spend about 20 minutes getting the copper out. Yes it still collects copper like a copper magnet but at least it is easy to clean. My accuracy also improved but it is still not the one hole shooter we all strive for.

In the future I would only consider this treatment as a last resort and would not do it to a good shooting barrel even though it helped my .308.

Larry
 
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