New Barrel Break-in And Cleaning Methods

Litehiker

Well-Known Member
Joined
Sep 15, 2012
Messages
2,363
Location
Mojave Desert, Nevada
How about using a BORE SCOPE??? Then you will know for sure if your expensive, lapped custom barrel needs more cleaning.

Or that your rough machined El Cheapo barrel will need cleaning after EVERY shot for the first 20 and after EVERY TEN shots for the rest of the barrel's life!

Eric B.
 

J E Custom

Well-Known Member
Joined
Jul 29, 2004
Messages
10,201
Location
Texas
How about using a BORE SCOPE??? Then you will know for sure if your expensive, lapped custom barrel needs more cleaning.

Or that your rough machined El Cheapo barrel will need cleaning after EVERY shot for the first 20 and after EVERY TEN shots for the rest of the barrel's life!

Eric B.

The bore scope requires a lot of interpretation and experience to see/know where the barrel is. I have looked at many barrels with my bore scope and the difference in a never fired, and broke in barrel in is almost impossible to see unless it is a poor or factory barrel. With these barrels, 40 or more shots are needed to show any improvements.

It may also be a good way to evaluate where in life the barrel is if you chronograph
the first shot and keep it in your loading notes. And occasionally chronograph the same load to see if there are any noticeable changes.

Normally while brake in is being performed, you can tell the difference by feel and the amount of fouling deposited after firing each shot. But the Increase in velocity should be an indication of the best condition of the bore, and when the velocity stops gaining and starts bouncing up and down,it should indicate that the difference in velocity is the load itself and not the barrel anymore.

Using the chronograph just seemed like a good way to see if the brake in did anything besides improving/reducing the fouling. It also has shone when the process was no longer a benefit and velocity has peaked.

I have yet to do a factory barrel, But I would think I would be a good indicator of the quality of the barrel if the spread was not that much for the first 10+ shots and it would take many more shots for it to reach it's peak velocity Or never really improve that much.

Just another way to understand the pros and cons of brake in in my opinion.

J E CUSTOM
 
Last edited:

SFC TONYM

Member
Joined
May 4, 2019
Messages
18
Location
Massachusetts
Len,
Best insights as to cleaning for retaining prime accuracy I do believe I have ever read!

Merry Christmas,

Gene S.
Thanks. I'll check out some other products. I've never greased lugs before, didn't really know it was needed til I got into the long range game. And I'm guessing you'd only Grease the back of the lugs?
THANKS LEN
SUPER INFO !!!!
 

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