Lyman Bore Scope photos.

[rr2030]

So I got a new Lyman Bore Scope yesterday, It works really well. I have spent the entire morning looking down the tubes of various rifles in an attempt to understand what the heck I am looking at. The high milage 22-250 is a Greek Tragedy, looks like 3/4" free-bore and the rifling is shallow for a few inches!. Surprisingly, I found more cracks n stuff in the .308 with about 1500 rounds down it than I had expected.

For your curiosity 22-250:

end of the chamber

free bore?

2" into the rifling

12" from muzzle

 

[Zero333]

Your lyman borescope takes nicer pics than mine.

 

[orbitup]

That looks a lot like my 308 barrel.

 

[memilanuk]

Nice! I know for me, finding a way to hold the probe at the right spot helped immensely with getting the pictures in focus. I ended up wrapping tape around the wand in a couple spots to help it center up in the bore guide (and barrel).

Looks like the newer higher-res version definitely takes better pics than the original!

 

[rr2030]

I had no idea the machining marks would be so rough, amazing it shot so well and still shoots better than it should.

 

[Someoldguy]

That's why some guys recommending not having a bore scope. Just something else to potentially cause worry.
I figure I want all the information I can get, so I'm glad to have one.

 

[dmoran]

@rr2030
A lot of layered carbon in there. It will look some what better if you choose to clean it out more.
But it will take some serious elbow grease to get it. Can be all most impossible to get it all out, when at that state.
Very typical of what I see in barrels that have spent most there life carbon layered.
Clean a barrel to shiny blue steel every time you clean it, and you will see the reward (and how useful a bore-scope is).
Just my 2-cents

 

[rr2030]

@rr2030
A lot of layered carbon in there. It will look some what better if you choose to clean it out more.
But it will take some serious elbow grease to get it. Can be all most impossible to get it all out, when at that state.
Very typical of what I see in barrels that have spent most there life carbon layered.
Clean a barrel to shiny blue steel every time you clean it, and you will see the reward (and how useful a bore-scope is).
Just my 2-cents

Like most, I thought I was cleaning the piss out of it, possibly over scrubbing . But with out a bore scope there is no way to verifying how clean it is, or isn't. This rifle has about 1500 molly coated bullets down it, possibly I don't have all the molly out?
Pretty sure that after 3K + rounds its toast any way, don't you think?

 

[dmoran]

@rr2030
Oh-ya.... it's pretty much seen its better days - IMO. But still some usable life in there.
It would make a great candidate to learn on, to experiment with different cleaners and cleaning methods !.!.!
I've seen a few a lot worse, and it can be surprising sometimes how well a barrel can shoot, even when its best is burned out.

Been using bore-scopes for around 15-years now, and cleaned a lot of customer barrels (besides my own) utilizing them.
Learned a lot of tricks to getting hard layers like that out, that I never would have been able to with out a bore-scope.
Good Luck

 

[rr2030]

thinking about using the carbon cleaner concentrate we use on pistons and fuel injectors, a few wet patches and let it soak overnight. And you're right, amazedly this barrel still shoots.

 

[dmoran]

@rr2030
Never seen a cleaner or chemical that can remove hard carbon layer by itself. It has to be "mechanically" removed.
It always takes brushing and scrubbing with the cleaners, fallowed by repeated soakings and brushing/scrubbing.
When there bad, about the best way I know is to:

• Soak for an hour, clean/scrub/brush for 10-minutes.
• Repeat... repeat... repeat... repeat... repeat... repeat... repeat...

It can take hours and hours, even days.
Time and "elbow grease" is your friend.

 

[rr2030]

I'll post the results of my efforts (or lack of) when I am done.

 

[Someoldguy]

It's your barrel and your decision, but if it were mine I'd not change anything your doing on that barrel *IF* it's still shooting well.

Don't go trying to fix it if the target says it ain't broke.

 

[rr2030]

Think I might clean the luck out of it ?

 

[Someoldguy]

I think it's highly unlikely you'll get it to shoot any better and quite likely it'll shoot considerably worse.

Just my opinion.

 

[rr2030]

Well tonight I have been cruising the barrel makers for a replacement, would like to buy one off the shelf but none in stock. Plus any barrel available, with out the installation is around $375 + what ever a smith will charge me to hang it on the receiver.

 

[RGRobinett]

For comparison to my Hawkeye, I purchased a Lyman bore-scope, and have been surprised by the image quality. Pic capturing is nice too. To obtain a crisp image, obtain some O-rings, with a close inside diameter/shaft fit, and, to accommodate multiple calibers, various thicknesses, and position along the shaft to keep the lens more-or-less centered and to limit the viewing angle changes. My only "gripes": constant focal-length, and non-swiveling. RG

 

[6MMsteve]

looks like a J&B prime candidate

 

[rr2030]

looks like a J&B prime candidate

I have always used as part of the cleaning regiment VFG pellets soaked in Kroil and a generous amount of JB on them. Thats along with the barrel foam, hoppes 9, bronze brush, nylon brush and a final spray of non chlorinated brake cleaner. Then a few patches with a little break free, verify the patches are clean and in the safe the rifle goes.

 

[rr2030]

So I could not find the Top Engine Cleaner and decided to use Techroline available at your local gas pump. After a vigorous regime of JB and bronze brush the results were anti-climatic. I did not notice any significant change. My thoughts are its as good as it's going to get. This rifle barrel owes me nothing, it's been a shooter since day 1 and thats over 3K rounds ago. Not bad for a factory Rem 22-250 barrel. This rifle has wasted at least 50 Coyotes, lord knows how many ground Squirrels, half dozen Bob Cats and a few other critters to boot. When they built homes on the ranches I had access to, I decided to shoot 600 yard varmint silhouette and 600 yard bench rest with it and several times posted 2.3" and 2.7 " groups. Since I stopped doing that, I have been punching paper and slamming steel at distance, not bad for a Factory Stock Rem 700, only modification is I had Neil Jones clean up the trigger then set it to 1lb. and I hung a Remington PSS stock on it to match my .308. So I guess I'll just shoot it as is till the performance drastically drops off, probably sooner than later.

Now back to the OP, the bore scope works great, I just need to become familiar with what I am viewing and learn to interpret that information.