Home Forums Hunting & Shooting Ask The Gunwriters JB Bore Compound or Bore Bright

Here is a picture of my new toy:
http://www.gunbroker.com/auction/ViewItem.asp?Item=19676553

I plan to start by polishing the barrel with JB's. What is the difference between the "Bore Compund" and the "Bore Bright"? Do you mix them with oil or use them straight?

I plan to give it about 100 strokes. Is there any benefit to
polishing the chamber?

Thanks for the information.

It is my understanding that JB paste is too soft to remove barrel metal (not lapping compound), it only removes copper fouling and carbon.
On a cold day I use WD-40 on a patch with the paste, but on a hot day it won't need to be thinner.

Hunt1,
STOP! DON'T DO ANYTHING YET! JB Bore Bright will definitely smooth out imperfections in your bore. However, you must NOT polish your chamber with it or anything else. DO NOT POLISH THE CHAMBER! Is that clear? You will ruin the barrel if you do, as the cartridge cases cannot grip a polished chamber and will split, collapse, not seal the breech properly and cause excess pressures at the bolt face. VERY DANGEROUS!

To break in your barrel properly, shoot FMJ rounds and for the first 30 shots clean the barrel after every shot. Then, carefully wrap a smaller patch which has been impregnated with JB Bore Bright around a smaller caliber or severly worn bronze brush in that caliber and do your scrubbing for about 50 strokes and clean the barrel with gun solvent as usual until you get all of the JB Bore Bright out of the barrel. Then fire rounds 31-50 cleaning the bore every other shot. Then fire rounds 50 - 100 cleaning every fith shot, at which point your barrel should be completely broken in. Give it a try.

Flower Child

Flower Child,

Thanks for the warning. I will polish every part of the rifle
(whether it needs it or not) but it will only clean the chamber.

I don't have a lot of time to spend at the range. I would love to find a way to shorten the break in process. I know that many posters don't believe a break in is needed. I figured polishing the bore can't hurt.

You might try doing a search on this site. I seem to remember someone who used JB Bore compund before firing to speed up the breakin procedure.

Gene

LoboHunter,

The prior posts are what got me thinking about this project. On this site everyone refers to JB's "bore paste". Brownels sells JB's "Bore Compound" and JB's "Bore Bright". The "Bore Compound" appears to be what everyone on this site refers to as "bore paste". Is that correct? If that is true, what is the "Bore Bright". It sounds like it is too aggressive to use often.

Hunt1

Soory, didn't know the motivation for your question.

I use "Bore Compound" and am not familiar with Bore Bright. I put my rifle barrel in the Quake Industries box and turn it barrel down on my mat and go after the barrel with a rigid rod using in an undersized brass brush wrapped in a cotton patch with the "Bore Compound". The box keeps my mat dry and I cannot get into the crown.

Good Luck

Gene

For the poster who said some don't believe a break in is necessary. I guess " Necessary" is subject to interpretation. When I go to the range in the fall I see hundreds of hunters who dust their guns off and shoot 5 shots at 100 yards. They are for the most part happy if all five shots hit the paper someplace. On the other hand if you are a serious shooter and you want that gun to last a lifetime I'd sure go with the proper break in procedure. I use the procedure listed above for the first 100 rounds on my Weatherby and Sucks. They are both under 1" guns at 100 yards. I used the JB's to polish the bores after each day at the range. It is a PITA but then there's no rule that says you have to break it in in a single season if you don't have the time. You can keep a log if it's easier for you. After a long day at the range I still clean with shooters choice, Sweets if necessary, followed by some Jb's and ending with a good cleaning of Shooters choice.

For breaking in barrels is it best to use a jacketed bullet or an all copper bullet like Barnes? I thought I read in the Barnes Manual they reccomended breaking in with a jacketed bullet instead of all copper? I have used jacketed bullets.

I broke in my .340wby and it shoots less than 1 moa with 4 different prem bullet loads. I had not broken in my .06 originally but I did a break in type cleaning to it last year and I was restored with good accuracy again so I definately believe in it.

Stetson,

you did not specify if you used the Bore Brite "polish" or the regular paster "compound". I wouldn't think you would want to use an aggressive "polish" on a bore after each shooting session.

I use the less aggressive compound on my guns, I have not used the polish however but am considering a 1 time use on some of my older rifles that have rough bores.

Yeah that's beacause until this strand I always thought there was only 1 JB's paste. <img src="/ubbthreads/images/graemlins/crazy.gif" alt="" /> What I use is called " JB's non embedding bore compound". It comes in a little white plastic jar . A little goes a long ways. After the first hundred rounds or so I dont need the JB's very often as the shooters choice takes most of the copper out. On my carbon barrels it can take a few days of soaking and patching. I like the shooters choice though because it is very mild. Take a wiff of the sweets some time WOW ! That stuff is strooong. This whole cleaning/break in plan was told to me by one of the guys that used to go to the range where I shot. I later found out he was a member of the US shooting team. Of course he used a SUCKS <img src="/ubbthreads/images/graemlins/grin.gif" alt="" /> PS I never use all copper bullets as a personal choice. They leave more copper in the barrel and I've never been dissapointed with Nosler partitions. I probably wouldn't shoot all copper during break in on my gun.

I've been shooting all copper Barnes bullets for a while and use CR-10 copper remover as well as Shooter's Choice and JBs compound.

Once a bore is broken in an smooth it certainly reduces carbon and copper fouling and cleaning gets much less time consuming.

For those barrels not lapped by the maker, I lap them myself to save the wear and tear on shooring the rifle to break it in. Barrels made by Hart, Lilja, Shilen and Kreiger, for example, are lapped by them, so they don't need breaking in.
DMB

I think my Weatherby came with a Kreiger barrel and Weatherby does recommend break in. It sure cant hurt and I firmly believe mine benefited from it.