Before and After Bore Cleaning

[urbanrifleman]

i cleaned a dasher tonite after sitting 2 weeks and shooting 160rds. This is nothing but butch’s and a bronze brush with the first patch a wetter, then brushing, then iosso, then nothing but butchs- no brushing. Pretty much a standard cleaning method for br shooting except skipping the iosso unless you got that many rounds. This barrel has around 2000 rds and has never shot anything but varget. Total time was less than 10mins

View attachment 1141488

Ok, cool. These are patches after you did all that?

You did Butchs for all-
One wet patch
Bronze brush with solvent-how many strokes you think?
Iosso (how did you apply it) how many strokes?
Then finish with these patches of Butchs? I'm guessing?

Thanks for the response

 

[skeeljc]

Are IOSSO Bore Cleaner and IOSSO Metal Polish the same product?

 

[urbanrifleman]

I do not use Iosso.

Got to the range this morning post second cleaning. It was calm for about 5 minutes.

The group on the right is the cold bore group.

Group on the left is the following group.

223 WWC brass with 25.2 AR Comp 52 smk moly set to mag length feeding from the mag. Made on my progressive.

Those are 1 inch squares.

 

[jamesdmock]

With the speed with which you moved the borescope through the barrel and keeping it focused on the top of the lands, it was difficult to see the considerable cracking present. Also, your resolution was not the best. The carbon simply outlines the fire cracking, but it is still there. Some barrels shoot with a lot of cracking like the McMillan that the late Jef Fowler used at the Nationals one year. He retired it after ~12,000 rounds and three National Championships. Good shooting...James

 

[urbanrifleman]

With the speed with which you moved the borescope through the barrel and keeping it focused on the top of the lands, it was difficult to see the considerable cracking present. Also, your resolution was not the best. The carbon simply outlines the fire cracking, but it is still there. Some barrels shoot with a lot of cracking like the McMillan that the late Jef Fowler used at the Nationals one year. He retired it after ~12,000 rounds and three National Championships. Good shooting...James

Thanks!! I wouldn't say "considerable" but it certainly has some. It's not as bad as my 243 at 900 rounds. I cleaned a 243 for a guy that had about 800 rounds and it was chewed up something awful.

I can certainly see that the black stuff "highlights" the fire cracking as you said, and your explanation is most likely also the correct one. I think some of the black highlighter is moly.