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Barrel Break In Newb Question

23353 Views 24 Replies 12 Participants Last post by  rkittine
I have read a great great many articles on this. Including several from a Mr. Gale McMillan, and several posts
But is it now reasonable to assume that Break In Barrel Procedure does more damage the good?
Has anyone experienced a deficiency in their rifle from NOT breaking it in?
Has anyone not break in their rifle and experianced tight sub MOA at 100yds?

I hope this doesnt open pandora's box, after from what I've searched and read, this seems to be the "Less Filling, Taste Great" debate.

But thank you for any info anyone can provide!!!!!
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Well, I have never broken in a barrel. My new 6BR will be here soon and my smith sez I should so I might. I'm pretty lazy so I might not. From all my reading, I understand that the only benefit is reduced copper fouling and if you buy a good barrel you shouldn't have much copper fouling.

Breaking in a barrel will not increase / decrease accuracy.
I,kinda use a break in procedure,which is fairly basic, I clean the new barrel with
plain liquid windex untill patches come out totally clean, this removes most machine oils. Then
I shoot aprox 10 rounds and give a simple cleaning with windex again,which also removes copper,
shoot 10 more times,clean again. after that I figure its broke in after just one box of ammo.
accuracy will probally continue to improve,just keep an eye out for copper fouling (rough bores
collect more copper than smooth ones) if you get a lot of copper after just 10 rounds the bore is still
not broken in yet.(you should get very little fouling after 10 rounds) some shooters go 100 rounds
or more without cleaning for copper,but run a clean (non copper solvent) patch every few rounds.
but,this is just my procedure. All of my rifles are really good shooters.
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I may just go ahead and break it in, I'm back and forth, besides my buddy who is still with dept. can help me break it in and maybe even get me some ammo
Windex removes copper!?
I'm gonna try that!
quaid said:
Windex removes copper!?
I'm gonna try that!
The ammonia that is in Windex is the same active ingredient that is in Barnes CR-10 bore solvent. The amount in Barnes though is a higher concentration. I imagine Windex would work ok, but if you can find a cleaning supply place that sells industrial strength ammonia that would work better and by quantity would be alot cheaper then Barnes CR-10. Just use it in a well ventelated area when cleaning.
I know our grocery store sells ammonia by itself
This sounds like our home remedy when we used to clean our M2 50 cals for inspection and found that foam shaving creme preferably Barbersol left the gun
Q-Tip Clean:D
quaid said:
Windex removes copper!?
I'm gonna try that!
I actually found that information about windex several years back,it was a recomended method
by Howa for break in of their barrels,it does contain ammonia, but smells much better! and is not
so strong as to be harmful.High concentrations of ammonia can be very harsh and I only use my
sweets 7.62 or barnes if I cant cut it with the windex or hoppes benchrest. I rarely have to use
these other products,if I use the windex on a regular basis.
The things I learn on this site are truly amazing!!
def. gonna try that windex suggestion
I like to use the Tubb's final finish lapping bullets. If really smooths out the tooling marks and make the rifle clean much easier and foul even less.
I like to use the Tubb's final finish lapping bullets. If really smooths out the tooling marks and make the rifle clean much easier and foul even less.
Completely agree. Used these lapping rounds on a Winchester Model 70 (.223)

They really iproved the accuracy and made it cleaner.
I like to use the Tubb's final finish lapping bullets. If really smooths out the tooling marks and make the rifle clean much easier and foul even less.
Rather than "fire lapping" which you have no control over, why not learn how to "hand lap". If you have the ability to melt a fishing sinker you can hand lap a bore and get a far better job with less risk of ruining a throat.

Get a cast iron lead ladle made by Lyman. Not expensive. Use a metal patch loop on the end of a cleaning rod. Insert the rod in the bore from the chamber end and extend it through the muzzle. Wrap the bottom of the patch look with some cotton based string (not polyester or nylon) to form a dam for the melted lead. Push the look back into the barrel using a tooth pick or such to make sure the string is packed tightly but leaving the "loop" exposed in the barrel. Pour the melted lead into the bore, stopping before it reaches the crown. When cool you can tap the end of the rod to remove your "lap" from the bore.

Cut some spiral grooves in the lap with a knife blade (I make mine at right angles to the rifling), apply some lapping compound to the lap, insert it in the bore from the chamber end, and work it back and forth in full length strokes. I start with a fine grit (300) and work down to even finer (600). When finished lapping and there are no "tight spots" in the bore, I finish with J-B Bore Bright which is a jewelers rouge like material. You will have to make several "laps" but just melt the lead off the patch loop and repeat.

Hand lapping is much more controlled and doesn't eat off one side of the rifling at the throat area.

There are numerous YouTube videos on Hand Lapping. The finest barrels made are hand lapped, not fire lapped.
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I know our grocery store sells ammonia by itself
This sounds like our home remedy when we used to clean our M2 50 cals for inspection and found that foam shaving creme preferably Barbersol left the gun
Q-Tip Clean:D
I learn something new every day on this site. I never heard of using shaving creme or Windex on a gun. Simple green yes.
Thanks
RC
Unfortunately, I am the guy whose airplane model windows were covered in glue. I am not the guy to be melting and pouring lead!

But I wonder, what results would I get if i impregnated a cleaning patch with 300 (then 600) grit polishing compound, then pushed it through the bore a dozen times or so?

I have a 700P waiting for the IRS to give me my money back. Remington suggested the usual break in procedure.

Clean/oil every shot x 10.
Clean/oil every other shot x 5

This does make me think a pre polish might cut the high edges off before round one.
I learn something new every day on this site. I never heard of using shaving creme or Windex on a gun. Simple green yes.
Thanks
RC
Anything you use in your home or shop to clean a dirty surface can be used to clean a rifle bore. If you need to remove any light copper fouling just use one with ammonia.

When I was a kid (I was actually a 'road guide' for the three wise men) we used to take a bowl of hot soapy water, immerse the muzzle of our military surplus rifles in it, then using a cleaning rod with patch stuck in it from the chamber end, pull the water up into the bore than push it back out. The wet patch worked just like a pump piston. I used either Tide laundry detergent (the old white granular stuff) or some Joy Dish soap liquid. This washed all the carbon and un-burned powder out of the bore and was an important step when using the old corrosive primed surplus ammo.

After the "bath" in soap and water, only then did we go to work with a patch and some bore cleaner (Hoppe's for me).

Like I said, look under the kitchen sink. Just about anything you use to clean kitchen surfaces can be used to clean out a bore and if it has ammonia in it the copper will go too.
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Unfortunately, I am the guy whose airplane model windows were covered in glue. I am not the guy to be melting and pouring lead!

But I wonder, what results would I get if i impregnated a cleaning patch with 300 (then 600) grit polishing compound, then pushed it through the bore a dozen times or so?

I have a 700P waiting for the IRS to give me my money back. Remington suggested the usual break in procedure.

Clean/oil every shot x 10.
Clean/oil every other shot x 5

This does make me think a pre polish might cut the high edges off before round one.
The purpose of using a "lap" with the coarser grits is that it will follow the lands and grooves, only knocking down the sharp parts of each. If you use a patch with anything coarser than the J-B Bore Brite you run the risk of rounding the lands off and actually "grinding" them down.

If you are as "challenged" as you say, just get a small jar of J-B Bore Bright and follow the instructions. As I posted earlier, it's a compound made with a jeweler's rouge like substance that merely polishes. It's good stuff to have around for cleaning a bore that might have some carbon stuck in it or some copper in the throat area.

I know a local Bench Rest shooter that uses a jar of it a year while maintaining the throat area of his competition rifles.

The nice thing about the J-B Bore Bright is that it is made of particles that merely polish and don't become embedded in the barrel metal. When you're done polishing it cleans out easily with bore cleaner and patches.

I wouldn't hesitate to use it to "pre-polish" a brand new factory barrel. Would get you to your goal with fewer rounds.
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Trust me, I fly real airplanes. They only let me start it. Lol

I will pick up some jb bore bright!
Trust me, I fly real airplanes. They only let me start it. Lol

I will pick up some jb bore bright!

Just a note on the J-B BB, you will ALWAYS see black on the patch. It's a result of the polishing process, not an indication that your bore is fouled with carbon. After you stop polishing, run a patch wet with your favorite bore cleaner through and then dry patch until they come out clean. Sometimes I'll spray some Brake Clean down the barrel to flush out the J-B and then proceed with the rest of the cleaning.
Some one else turned me on to using boretech copper remover, works good, I know some of tis is religion. The real lesson I learned was to use boretech jags. The jags are not brass. Some you dont keep getting blue on the patch, indicating copper is still there.
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