new barrel fitted

J

JRB

Guest
I have just had my old CZ fitted with a new match barrel and BR stock
What procedures do I need to follow with a new barrel
All the basics like polishing and basic run in?
Regards
Jim
 
Keep the throat clean every couple boxes until you get a couple bricks thru it and don't be afraid to brush it every few matches.
 
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Thanks Tim,
whats your method to clean the throat
just looking for some ideas on barrel care
Jim
 
I have a maddco barrel, I think but my Smith went bad so I am not 100% sure.
at first I shot some 5 shot groups and brushed and it had nearly 2 inch vertical but it has now settled down
gather it had some burrs in the throat?
Jim
 
Got it, so just enough to remove any lead.
Does the bronze brush get used?
how do you polish the throat to remove any burrs?
Jim
 
How to clean a barrel :

JRB said:
Thanks Tim,
whats your method to clean the throat
just looking for some ideas on barrel care
Jim
Click to expand...

Jim : There are so many ways to clean a barrel but only one right way . I shoot bench rest and have a cleaning method I learned from my benchrest friends and will pass this along to you if you choose to use it fine if not -your problem. When I clean my barrel I run one wet patch of my favorite cleaning product ( Pal oil ) down the barrel to remove the fouling. I let it sit in the barrel about five to six min and let it penertrate the pores of the barrel. Then I take several dry patches down the barrel until one comes out clean. I do not run a bronze brush down the barrel every time. When the barrel seems like it is falling off from it's normal performance I run a bronze brush down the barrel with a patch with Pal oil on it . I scrub the chamber area to remove the fouling ring that will form from shooting 22 lr ammo. I then use Isso and polish the chamber area which takes care of the chamber ring. I always push the wet or dry patches one way down the barrel same thing with the bronze brush. When the brush exits the bore at the muzzle I unscrew the brush and reattach it to the cleaning rod. I never pull anything back through the barrel. garrisone.
 
Garrisone,
Thank you for your detailed method on cleaning
Can I ask some questions
when you use the bronze brush do you feel that is to remove a build up of lead?
Presumably the method you use removes all the powder? or does some always stick against the corner of the grooves
I see how the iosso works in the throat, do you ever run it right the length of the barrel in a 'major' clean for example
do you not draw anything back through the bore from the muzzle to protect the crown or is there another reason?
Jim
 
cleaning

The reason I don't pull the brush back through the barrel is - You have pushed the brush down the barrel and it has picked up crud and is in the brush already. If you pull the brush back through you are pulling all that crud back through the barrel. I push the brush out the barrel and take the brush off the rod and reattach it to push it down again if needed. This helps to protect the crown and you are not pulling all that crud back through your barrel. Isso is used in the chamber area and I do use a back and forth method to clean the chamber but at the end I push the patch with the Isso on it down the barrel and use clean patches until one comes out clean. Hope this helps garrisone.
 
Makes perfect sense, thanks for your explaination
just out of interest how many shots do you fire between cleaning
Jim
 
cleaning

JRB said:
Makes perfect sense, thanks for your explaination
just out of interest how many shots do you fire between cleaning
Jim
Click to expand...

Jim : If you are speaking about how many shots I fire in order for the barrel to come back to where it is shooting right for my compitition target I shoot about 5 to 8 and sometimes more in order for it come back where it should be . In other words -what you are doing is laying down a good coat of wax in the barrel. If you are asking about how many shots I shoot in a match -it is about 200 rounds for four cards. The match is set up so you shoot 2 cards in the first relay and 2 cards in the secound relay. When the first relay is finished and I have removed my gear from the bench I run a couple of wet patches down the barrel then shoot the 2nd relay. I give the barrel a good cleaning when I get home and put the rifle in the gun safe until the next match. When the barrel starts to fall off where it normally shoot best I do a good scrub with the bronze bore brush. Normaly I use wet patches to clean the crud out the barrel and dry patches until one comes out clean. Hope this will help you. garrisone.
 
Shot some groups with the new barrel

That is a great help and welcome advise, thank you

On the weekend I shot another 100 or so shots down the new barrel and it is starting to group better
I have been just using some hunting ammo for the initial run in and it has shot very poorly, around 1.5-2 inch groups at 50 m
The morning was challenging and gusty so I did not feel that comfortable with my groups.
I was completing my run in, I think there was some burrs in there, to give such large groups, and sight in the 10x leupold scope , i did not set up flags so that did not help the grouping
Here is the target I shot, at 50m, on the day I was a little disappointed, by I guess I can see cross wind and I am not sure about the large verticle but that could be me and or the wind swirling?
I started trying to hold a little for the wind but did not feel that I was predicting it with any regular accuracy
The first target has two groups as I had to resight the scope when I changed ammo. Both runs where shot from a clean barrel using eley black
The best target was shot with very low wind, and must have fluked the condition, which was not the norm by far, mostly was gusting from 5-12 miles
Jim
 

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crb said:
In my experience lead bullets will not remove burrs from the leade of a chamber.
Click to expand...

What I have been doing is shooting 25 than cleaning,
after doing this a few times the targets did not improve, still 1.5 -2 inches
Then I used the bronze brush a few times with some BBS and then some iosso on a rag and polished the throat area.
It is now shooting better but need to shoot it more on a calm day
Jim
 
Also, if you're testing anything ever without the befits of flags, you're wasting your time and ammo. Always set flags, remember one of the most important things you are doing is learning to read wind.
 
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I was wondering if that was my trouble, thanks for the advise
if you are shooting alone do you set a row each side?
In the past I have set 1 row down the line, then 1 more each side 20 yards in front if the bench, 10 yards to the side
Jim
 
The ones off to the side are pretty helpful in seeing a switch coming.
 
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