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breaking in a barrel

 
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  #8  
Old 04-17-2011, 07:28 PM
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Re: breaking in a barrel

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Originally Posted by buckbrush View Post
You always clean after 20 rounds?
Not religiously. 20 rounds is an approximation. I always clean at the end of a session at the range.

--Ben
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  #9  
Old 04-17-2011, 08:31 PM
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Re: breaking in a barrel

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Originally Posted by venom600 View Post
My Sendero 300 RUM took about 40 rounds. I did it all in one range session, but it took over 3 hours to get it done. Very time consuming. But worth it for sure. The first few (10 or so) fouled the barrel pretty badly. Now I really only clean every 20 rounds or so, unless I'm switching bullets during load development.

--Ben
My accuracy will usually last about 50-70 rounds and I usually leave the barrel fouled until it needs cleaning. On average, that's about every other trip to the range.
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  #10  
Old 04-17-2011, 08:39 PM
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Re: breaking in a barrel

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Originally Posted by MontanaRifleman View Post
My accuracy will usually last about 50-70 rounds and I usually leave the barrel fouled until it needs cleaning. On average, that's about every other trip to the range.
I could probably go longer than 20, but at this point I usually shoot 20 rds. or less each trip to the range. I make it a habit to clean at the end of every range session so that I always know what state the rifle is in when I bring it home.

--Ben
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  #11  
Old 04-17-2011, 08:53 PM
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Re: breaking in a barrel

Holy smokes. My 22-250 gets cleaned once a year. Depending on the gopher and p-dog population, that could be well over 500 rounds. My 223 bolt gun probably gets over 1000 before it gets cleaned. I've never noticed a decrease in accuracy in either of them. Even my 243 AI probably gets to 500 before cleanings and again I can't tell that accuracy has ever tailed off. Just wondering what I'm missing...
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  #12  
Old 04-17-2011, 09:03 PM
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Location: Bozeman, MT
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Re: breaking in a barrel

To be perfectly honest, I haven't seen a drop off in accuracy due to fouling....ever. I was just taught (since I was about grasshopper-knee height ) to clean your gun regularly. So, since I clean so frequently, I've never seen seen that drop off in accuracy due to fouling.

--Ben
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  #13  
Old 04-17-2011, 09:59 PM
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Re: breaking in a barrel

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Originally Posted by buckbrush View Post
Just wondering what I'm missing...
Probably the differences in cartridges and cals. I haven't shot anything under a 25-06 on a regular basis, but those small 22 cal bullets don't have much bearing surface, so they might not foul as much as longer bullets. I just got a 22-250 this year so I'll be finding out
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  #14  
Old 04-17-2011, 10:29 PM
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Re: breaking in a barrel

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Originally Posted by buckbrush View Post
Holy smokes. My 22-250 gets cleaned once a year. Depending on the gopher and p-dog population, that could be well over 500 rounds. My 223 bolt gun probably gets over 1000 before it gets cleaned. I've never noticed a decrease in accuracy in either of them. Even my 243 AI probably gets to 500 before cleanings and again I can't tell that accuracy has ever tailed off. Just wondering what I'm missing...
What you are missing is the best accuracy that your rifle can do.

If you clean your rifle back to bare metal clean and shoot 3 shot groups, you will probably find
that the first shot will go left and the next 3 will group together to the right of the first shot.(The
first shot removes any solvents or oil) ,and the next 3 shots are from a lightly fouled barrel,

Keep shooting 3 shot groups until you see a deterioration in group size (It may be small but it will
tell you how many shots can be fired before accuracy drops off.

Most rifles reach this point at 7 to 9 shots but can vary based on the finish in the bore.

At this point accuracy seems to level out and will not get worse or better. This is the reason
that most people think that there rifle is fine while hunting. a good rest on a bench is realy the
only way to find how often you rifle needs cleaning(The same thing applies to load development)

I have some rifles that shoot the cold bore shot in the same spot as the next 5 or 6 rounds
And some shoot there best with a fouling shot and dry patching then the next half dozen
rounds hit the same place.

I prefer to shoot 5 shot groups to test the rifles accuracy but to check the fouling tolerance I use
3 shot groups.

To show the effect of fouling on a 5 shot group the 5th shot is normally the one to go out.
(Sometimes I think its me trying to hard not to mess up a great group).

When shooting hundreds of rounds without cleaning you are protecting your barrel with copper
fouling from ware but the throat is still eroding, so I figure I might as well get the most
accuracy while the barrel is still in good shape.

The fact that this subject is controversial I have tried both methods (Clean often, or not at all
for forty of fifty rounds) And in my opinion there is no question which method is best for accuracy
and cleanup.

As I said all barrels are different and each person can do it however suits him best.

J E CUSTOM
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