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Old 07-08-2009, 08:40 PM
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Borescope!!!!!!!



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I got to look at my CM-2 and my Anschutz 1907 with a borescope this evening and it was a delight to look at my CM-2 and realize it has the better looking bore. If 100 people looked at the bores without knowing what brand they were viewing I feel confident that all 100 would pick the CM-2 as the best barrel.
The metal looked etched in the Anschutz barrel. It was somewhat porous looking. Not really bad, but it was as if someone during the machining of the barrel said, "That's good enough." There were some faint lines that looked like chatter marks in the chamber and on the rifling in the bore. Not horrible, but with all the attention to detail on the outside of the gun I'd like to see that same degree of finish in the bore. The gun costs nearly $2K. I didn't get it to look at.
The metal in the CM-2 bore was beautiful, smooth without any scratches or flaws of any kind. I can see why it shoots so well.
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Old 07-09-2009, 08:22 AM
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Borescope Photos

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Originally Posted by Charlotte View Post
I got to look at my CM-2 and my Anschutz 1907 with a borescope this evening....
Very interesting! Were you able to take photos?
It would be wonderful if we would be able to see them.
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Old 07-09-2009, 09:13 AM
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I asked Tommy if we could hook up a camera and the answer is that he doesn't have the attachment to mount a camera, but it can be done.
It was interesting to note that in both guns there is a carbon ring in trhe chamber. There has been a concerted effort to remove that ring on the Anschutz and nothing special done to the CM-2 and the ring on the Anschutz is 4X what it is on the Russian, so it is obvious that the Russian is easier to clean and I assume it is because of the superior finish.
That ring affects accuracy and may well be the major issue in that rifles accuracy problems. Those pores and scratches collect fouling.
I'll give the Anschutz another chamber scrubbing and see how the accuracy holds up.
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Old 07-09-2009, 01:45 PM
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what happened to the dreaded donut scraper that used to be so big with the 22 bench resters , for cleaning that chamber carbon ring. I bought one - looked like a 22 wmr case that had teeth cut unto it with a theaded fitting for a rod. It did work but being brass it did not last long. are they still around??
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Old 07-09-2009, 07:38 PM
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I never heard of that tool, but the long time competitors I'm learning from just use a bronze brush and spin it in the chamber after soaking the chamber with a good solvent.
My last cleaning of the 1907 was done using short strokes in and out rather than spinning and I'm sure that is why it did not clean up as well as I had hoped.
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Old 07-09-2009, 08:13 PM
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Ask Target Talk

Quote:
Originally Posted by Charlotte View Post
I never heard of that tool,
but the long time competitors I'm learning from just use a bronze brush
and spin it in the chamber after soaking the chamber with a good solvent....
Charlotte your carbon problem has my attention.
I think it would be to your advantage to seek advice from a more specialized site.

For a proper technical answer, you maybe better served by posting
the chamber carbon ring question at a forum dedicated to Olympic firearms.
I've done it before and have benefitted with excellent information.
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Old 07-09-2009, 08:36 PM
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Ya that carbon ring......got my attention too.
I am cleaning my CZ and trying the brass brush spin.
Thank you....Charlotte
The best barrel cleaning tip I have herd on RFC that has made any
since in a.... long.... LONG....time.....

Swiss
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Old 07-09-2009, 10:54 PM
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That carbon ring is an accuracy killer according to my senior competitors and after looking through that borescope and seeing how I had not gotten rid of it after what I considered a really thorough hour long cleaning I plan on wearing out some brushes cleaning the chamber of every rimfire I own.
I'm signed up on targettalk and snoop around there from time to time but I'm in the company of AMU, Olympians, Presidents 100, Distinguished, etc., etc. that I can get to talk about these things face to face. What I can't get is fellow Russian rifle owners like I find here.
BTW, my Biathlon Basic is decked out with the Lyman 90 MJT on the Lipski base and 93 match globe on a champchoice base. I'm taking it to the range tomorrow (Friday) and will post a range report and some pictures.
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Old 07-10-2009, 12:30 PM
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Per the guys on benchrest central A guy in Gilmer ,Tx is still making the carbon ring scrapers .His name is Frank Tirrell @903-734-3667
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Old 07-10-2009, 12:46 PM
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carbon ring scraper

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Originally Posted by 2mene22s View Post
Per the guys on benchrest central
A guy in Gilmer ,Tx is still making the carbon ring scrapers .
His name is Frank Tirrell @903-734-3667
Good find 2mene22s ... With the clue provided by 2mene22s.
I found the Benchrest Central thread.

carbon ring scraper
Quote:
Is any one still making the tool for scraping the carbon ring from the front of the 22 chamber.
I bought one several years ago- they were a hot item at the time-
looked like a 22 mag cartridhge with teeth cut on it with a threaded stem to go on a rod.


The mans name is Frank Tirrell and he lives in Gilmer, TX.
If you call him be prepared to talk for a while.
His number is 903-734-3667.
He's retired now and fishes quite alot but he still shoots alot.
(He's into air rifle benchrest right now so good luck.)
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you must know what-to-do, and ... then ... do-your-best.
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Old 07-11-2009, 01:28 PM
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Solution for Carbon/Black Ring

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Originally Posted by aom22 View Post
Charlotte your carbon problem has my attention.
I think it would be to your advantage to seek advice from a more specialized site....
Charlotte,
Do you have Steven Boelter's book:
THE RIFLEMAN'S GUIDE TO RIMFIRE AMMUNITION
On page 325, Cleaning - Match Rifles, Steven addresses the black (or carbon) ring problem.
Quote:
Keeping this ring in check, is essential to top accuracy, and there are a number of techniques to do this.
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you must know what-to-do, and ... then ... do-your-best.
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  #12  
Old 07-11-2009, 02:05 PM
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Thanks for the plug..!

For those who don't have the book, here is a simple method that works very well.

1. Clean barrel with wet patches, and ten is all you need.

2. take a nylon brush and wrap it with fine bronze wool.

3. Short stroke the chamber and first inch of the barrel about 15 times.

4. repeat step 1, then step three again.

The ring will be gone.

I follow this with a bit of JB, also short stroking the chamber and first 2 inches of the barrel. Then wet patches, finishing with dry patches.

You'll be good to go.

A few tips:

Get a short cleaning rod, better if it's .17 caliber. Then, get a .17 nylon brush and wrap a big wad of bronze wool around that. That will last you a while and prevent any chance of running the rod into the bore. You can get the bronze wool from Brownells.

Run a few patches of oil down the bore after all of this, then dry patch. Your barrel will need a number of fouling rounds to come back in.

s.
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Old 07-11-2009, 02:16 PM
steve b.
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I also have the much more involved OCD version if anyone needs it.

s.
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  #14  
Old 07-12-2009, 06:05 AM
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Quote:
Originally Posted by Steve Boelter View Post
I also have the much more involved OCD version if anyone needs it.

s.
I prefer the ADD version.
Sure is good to see you around here.
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