Headspace for off the shelf ammo - 6.5 creedmoor

Discussion in 'Gunsmithing' started by Mram10us, Oct 26, 2019.


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  1. Mram10us

    Mram10us Well-Known Member LRH Team Member

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    Out of the 2 boxes I bought, they all fit with very little variance. Not to say another lot down the road won’t. I pointed this method out because it works great and keeps your cases snug with chamber from the first firing. Nothing unsafe. Why not headspace within parameters for the ammo you’ll be shooting? I appreciate your dialogue.
     
  2. Ckgworks

    Ckgworks Well-Known Member

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    This whole back and forth brought back a memory for me...... At one point in my life I planned on being a welder. I wanted to get into TIG pipe fitting/welding, and even went as far as to get certified in all position pipe TIG welding at a local College. The teacher that I had was a brilliant welder, it seemed that he could pretty much do any weld and it came out perfect. One evening I asked him a question about welding dissimilar metals with a certain kind of rod......his answer was "You can do anything if you don't know better..... once you know, you won't be able to do it anymore." Basically saying, it will work most of the time, but once you see it fail, you won't do it anymore.

    I think this pretty much sums up the two sides to this argument. I am NOT a gunsmith, though I tinker on my own stuff, and I may not always use the right tool, or the right process, but it's on my own stuff which I feel comfortable with. Just because it works for me doesn't mean I'll advocate others to follow in my path! Lots of budget builds going on, and it seems like a guy could fit the price of gauges into the budget......especially when they could be resold after use?

    As a side note, I bought the correct rod and welded my project up.........might have cost me a few bucks, but it was cheap education and his quote has popped in my head many times, I'm sure saving me some grief!
     
  3. Mram10us

    Mram10us Well-Known Member LRH Team Member

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    CKG,
    Are you saying that setting the headspace for the ammo you plan to fire, within go nogo parameters, is incorrect? I don’t want to put words in your mouth. I have go and nogo gauges for the cm which I stated in the post
     
  4. Edd

    Edd Well-Known Member

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    How do you know the go and no go test fine?
     
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  5. Mram10us

    Mram10us Well-Known Member LRH Team Member

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    I’ve got gauges :) Didn’t show that part on the video
     
  6. nmbarta

    nmbarta Well-Known Member

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    If you want a tight chamber you set it to tight side of the go gauge, that's it. If the go gauge go's, then any saami spec factory round "should" chamber, that's what the specs are for. As mentioned, most factory brass is set back from that so it will still chamber in a minimum spec chamber. If you head space to that brass, your likely not in saami specs.
    I don't care what you do with your rifle at all, and I'm not being argumentative.
    I just don't understand the point unless you don't care that your rifle is out of saami spec, which then I would understand that your trying to create a situation that most can only achieve with proper reloading practices. Like most, I shoot for about a .002 "bump".
    Given the fact that any factory ammo should chamber in "tight" saami spec chamber, if you want to get close to .002-.003 head space with factory ammo, your likely going to be out of spec. I don't see how you can have them both.
    I get what your getting at, and do see the point. I could also see how it could potentially cause problems, especially if the rifle ended up with a new owner.

    If you set your head space to your brass, and your go gauge go's, I would have to assume your brass is out of spec due to the fact that if you set your chamber back at all from there, your brass would not chamber.

    I'm not going to jump on you about your attitude, because I don't always have great attitude either, but you come across a bit abrasive, which I have found is not well received around here. Good luck with it.
     
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  7. Ckgworks

    Ckgworks Well-Known Member

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    Nmbarta pretty much summed up my feelings......
     
  8. Mram10us

    Mram10us Well-Known Member LRH Team Member

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    I come across abrasive because I have guys saying I don’t know what I’m doing when I have built more long range hunting rifles than they know. They are dead wrong to say I’m wrong. I was going to video the go and nogo functioning but figured it didn’t need to be done since I was simply passing on a technique I learned to get shelf ammo to fit.
    Would you sit back when guys that are ignorant want to bash you for doing something they don’t? I’m definitely abrasive when someone is disrespectful to me.

    Instead of being a know-it-all, maybe they could have posed questions to verify rather than simply make statements to make themselves look smart. Classless imo. Shortgrass and others can ignore me all they want and I hope they do. Others that build rifles can see what I did and know it works fine
     
  9. adam32

    adam32 Well-Known Member

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    So basically you're saying if you had used the proper SAAMI gauges from the start that off the shelf ammo wouldn't fit? Or just that it would've been a boring video that wouldn't have gotten any views?
     
  10. Mram10us

    Mram10us Well-Known Member LRH Team Member

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    Serious question or are you trying to pile on with some of the others?
     
  11. Mram10us

    Mram10us Well-Known Member LRH Team Member

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    It’s an extra step other than just using a go and nogo. Don’t say it’s out of spec, because it isn’t. It is within the parameters but verify the off the shelf ammo fits. Make more sense?
     
  12. Edd

    Edd Well-Known Member

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    How much longer than go is the chamber in that rifle in the video?
     
  13. Mram10us

    Mram10us Well-Known Member LRH Team Member

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    Maybe .001-.002”. Didn’t measure other than putting the gauge in. Didn’t feel slop or tight on go.
     
  14. swat

    swat Well-Known Member

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    i got an idea for safety reason's just use the go/ no-go gauges, and headspace tight on the go gauge. all factory ammo will feed, and shoot fine.
     
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