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Thread: swapping brass between barrels

  1. #1
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    swapping brass between barrels

    Assume several barrels have all been chambered with the same reamer and fitted to the same action as in many switch barrel rifles. The re-sizing die has been adjusted to minimally re-size the brass and bump the shoulder back .001 which is performed after every shooting. Is it acceptable to use the same brass in all of the barrels or should brass be segregated and shot out of the barrel it was fireformed in?

  2. #2
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    Brass is brass

    One's brass ends up being what their resizing die makes it to be, so as long as the chambers are very similar, the brass won't know or care where it is placed. I've always figgered, within reason, Brass is a container to place the components that matter most to accuracy. keep it sized appropriately and it will deliver the goods. One often hears about fresh brass giving outstanding groups. I figure it proves my point. The brass didn't care that it didn't fit the chamber exactly.

    Pete
    Last edited by Pete Wass; 02-19-2019 at 11:17 AM.

  3. #3
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    Quote Originally Posted by chino69 View Post
    Assume several barrels have all been chambered with the same reamer and fitted to the same action as in many switch barrel rifles. The re-sizing die has been adjusted to minimally re-size the brass and bump the shoulder back .001 which is performed after every shooting. Is it acceptable to use the same brass in all of the barrels or should brass be segregated and shot out of the barrel it was fireformed in?
    I assume you've never tried this?

  4. #4
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    swapping brass between barrels

    Quote Originally Posted by alinwa View Post
    I assume you've never tried this?
    Al, yes I have tried it. Ya gotta understand I spent 35 years in the nuclear industry and it is hard to shake the training and standards we had to work to. Everything was double, triple verified, peer reviewed, concurrently reviewed, independently reviewed, etc.. Nothing was left to chance or unanswered and even then mistakes were made. Some of these mistakes were made due to assumptions made by experienced people who did not question themselves. I just wanted to confirm what I assumed to be correct with the answers from experienced and seasoned shooters and put that question to bed. Still in the learning curve and there is much to be gleaned from this site and some of the members. Thanks to all for the patience and willingness to share info..
    Last edited by chino69; 02-19-2019 at 12:48 PM.

  5. #5
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    Quote Originally Posted by Pete Wass View Post
    One's brass ends up being what their resizing die makes it to be, so as long as the chambers are very similar, the brass won't know or care where it is placed. I've always figgered, within reason, Brass is a container to place the components that matter most to accuracy. keep it sized appropriately and it will deliver the goods. One often hears about fresh brass giving outstanding groups. I figure it proves my point. The brass didn't care that it didn't fit the chamber exactly.

    Pete
    Thanks Pete. You brought up an interesting phenomenon that I have experienced and that is virgin brass giving outstanding groups.

  6. #6
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    I have 2 identical actions (bat ds actions) both barrels are chambered with the same reamer, but I donít use the same brass in both guns. I keep track of barrel rounds in each. If I had one action and a couple of barrels for that action I personally would make sure that every time I changed barrels If I was going to use the same used brass I would Recheck the used brass to make sure it functions properly. You will find that sometimes even though both barrels are chamered with the same reamer, there could be some slight differences when the barrels are tightened down. But maybe thatís just me. I donít switch brass
    Gabe

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    Fire Forming Barrel

    If brass is to be dedicated to one barrel, does that imply that a dedicated fire forming barrel is a bad idea? Or is it okay for the initial firing?

  8. #8
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    As I said

    Quote Originally Posted by chino69 View Post
    Thanks Pete. You brought up an interesting phenomenon that I have experienced and that is virgin brass giving outstanding groups.
    I think it puts to bed the theory of dedicated brass. Beyond that, unless a full length sizing die is EXACTLY the same as one's chamber, there are bound to be differences. I am reasonably sure most people assume their FL sizing die is the same as their chamber but think very few, if any have taken the steps to measure them precisely. It is possible to do that but why go to the trouble.

    Pete
    Last edited by Pete Wass; 02-19-2019 at 06:22 PM.

  9. #9
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    Quote Originally Posted by chino69 View Post
    Al, yes I have tried it. Ya gotta understand I spent 35 years in the nuclear industry and it is hard to shake the training and standards we had to work to. Everything was double, triple verified, peer reviewed, concurrently reviewed, independently reviewed, etc.. Nothing was left to chance or unanswered and even then mistakes were made. Some of these mistakes were made due to assumptions made by experienced people who did not question themselves. I just wanted to confirm what I assumed to be correct with the answers from experienced and seasoned shooters and put that question to bed. Still in the learning curve and there is much to be gleaned from this site and some of the members. Thanks to all for the patience and willingness to share info..
    OK


    I use brass from one gun to another, sometime 3-5 barrels/guns. I have 7 different 6X47L's and can interchange them but only because I re-cut some of them to match and did all the work myself. I've never managed to buy different barrels with same settings. I once gave a fellow 3 barrels with one reamer and one action. They all came back different. This BTW is "normal"...... it's considered top-flight if the HEADSPACE between multiple chambers is within a thou but blessed few folks on this planet can make two chambers the same diameter/taper.

    You state "nothing left to chance, or unanswered" but do you know the questions?

    I don't mean that facetiously...... I bought my own reamers 30yrs ago figuring my sizing problems were over....... but getting a reamer DID NOT mean getting interchangeable chambers.

    I bought a lathe over it.

    NOW I get interchangeable chambers.

  10. #10
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    Rifles

    Quote Originally Posted by chino69 View Post
    Al, yes I have tried it. Ya gotta understand I spent 35 years in the nuclear industry and it is hard to shake the training and standards we had to work to. Everything was double, triple verified, peer reviewed, concurrently reviewed, independently reviewed, etc.. Nothing was left to chance or unanswered and even then mistakes were made. Some of these mistakes were made due to assumptions made by experienced people who did not question themselves. I just wanted to confirm what I assumed to be correct with the answers from experienced and seasoned shooters and put that question to bed. Still in the learning curve and there is much to be gleaned from this site and some of the members. Thanks to all for the patience and willingness to share info..
    are pretty simple machines and do not fall into the Nuclear Industry category. If the kind of research you are familiar with was done with rifles, we might be a lot father along than we are but at this stage of the art, we are using a very simple machine. Best not to over think them.


    Pete

  11. #11
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    Quote Originally Posted by Pete Wass View Post
    are pretty simple machines and do not fall into the Nuclear Industry category. If the kind of research you are familiar with was done with rifles, we might be a lot father along than we are but at this stage of the art, we are using a very simple machine. Best not to over think them.


    Pete

    Ohhh Yeahhh, "Nuclear Industry" and "Rocket Science"......

    just saying the words makes the whole rest of the world feel inadequate.....


    NOT!!!



    LOL

  12. #12
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    swapping brass between barrels

    Quote Originally Posted by alinwa View Post
    OK


    I use brass from one gun to another, sometime 3-5 barrels/guns. I have 7 different 6X47L's and can interchange them but only because I re-cut some of them to match and did all the work myself. I've never managed to buy different barrels with same settings. I once gave a fellow 3 barrels with one reamer and one action. They all came back different. This BTW is "normal"...... it's considered top-flight if the HEADSPACE between multiple chambers is within a thou but blessed few folks on this planet can make two chambers the same diameter/taper.

    You state "nothing left to chance, or unanswered" but do you know the questions?

    I don't mean that facetiously...... I bought my own reamers 30yrs ago figuring my sizing problems were over....... but getting a reamer DID NOT mean getting interchangeable chambers.

    I bought a lathe over it.



    NOW I get interchangeable chambers.
    Al, I did not take your comment(s) to be facetious. What I meant is that if unsure I will ask the right question until the answer(s) gel in my skull. Sometimes one will get different answers to the same question which warrants a bit more research. Again, thanks for the reply as I learned a few things I did not know/was unaware of before.

  13. #13
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    swapping brass between barrels

    Quote Originally Posted by Pete Wass View Post
    are pretty simple machines and do not fall into the Nuclear Industry category. If the kind of research you are familiar with was done with rifles, we might be a lot father along than we are but at this stage of the art, we are using a very simple machine. Best not to over think them.


    Pete
    Thanks Pete.

  14. #14
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    swapping brass between barrels

    Quote Originally Posted by alinwa View Post
    Ohhh Yeahhh, "Nuclear Industry" and "Rocket Science"......

    just saying the words makes the whole rest of the world feel inadequate.....


    NOT!!!



    LOL
    It is actually a frigging curse; not meant to make the rest of the world feel inadequate. One cannot imagine the level of detail, scrutiny and accountability that is involved. It is almost akin to a cult and I'm in need of deprogramming. Actually it was a fascinating industry with some very highly skilled people with interesting stories and backgrounds.

  15. #15
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    Quote Originally Posted by chino69 View Post
    It is actually a frigging curse; not meant to make the rest of the world feel inadequate. One cannot imagine the level of detail, scrutiny and accountability that is involved. It is almost akin to a cult and I'm in need of deprogramming. Actually it was a fascinating industry with some very highly skilled people with interesting stories and backgrounds.
    I completely agree. It's a fascinating industry employing many highly skilled and specialized people...... just like the automotive industry, the building industry, big oil, shipbuilding and maintenance (getting a glimpse into Jackie's world is such a treat) or any other facet of our lives. My father-in-law and his brother were inventors in America's Golden Age Of Innovation..... they actually LIVED the growth curve, starting in Detroit with "The Kings Of Industry", he even settled in the UP where Henry Ford, Harvey Firestone, Thomas Edison, Ernest Hemingway etc spent their summers.... Back when we could do/build/explore/conquer anything. He designed and built equipment for making experimental stuff for CalTech, MIT, NASA ....... when we needed stuff we just stepped up and BUILT IT! And if we couldn't move it, make a bigger machine.....Letourneau's 'Of Men And Machines' gives us a glimpse into heavy equipment, then, when one has relatives and friends working those huge mines it's neat to go look closer..... to stand in a loader bucket that will carry your entire home......


    I'm blessed to know literally hundreds of people working from under water and underground to the edge of space and it's ALL just friggin' too cool for words....INLUDING the nuclear power industry (or the plutonium industry LOL) but I grew up around the phrase "well, it ain't rocket science" only to grow up and find that NASA is about as dysfunctional as our local building dept and for the most part no brighter. And the power production/distribution industry is definitely a fascinating one.......I've got friends at Bonneville Power, many of my relatives lived and died with Hanford and Trojan, and now lotsa' folks involved with them stupid windmills lol....

    Anyways, wasn't pickin' on ya'.... just completely disagreeing with the idea that high end accuracy is "simple compared to complicated stuff like nuke/space)"

    cuz it AIN'T

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