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Thread: 308 head seating die

  1. #1

    308 head seating die

    Advice please.
    I've recently purchased second hand loading kit set up for 308 of a mate.

    I set the press ram up and wound down the head seater die up to it as seen on Internet. My problem is that when I put my case in and close the press I have about 1 mm gap between head and ram.
    My mate doesn't have the gap on his press. My brass case is 51mm long. The danger is if I force the press I can actually deform the case.

    I have cleaned the die head and it seems fine.

    I have got over the problem by inserting the case on the ram and fully lift, then winding the die to it and then off half a turn. Then screwing g the adjuster down to seat the head to the correct depth.

    With thanks
    craggy

    i

  2. #2
    Its a bullet seating die! From your description I don't think there is anything to worry about. You shouldn't be forcing the press arm anyway. Close the press, screw the die in until it stops, open the press, screw the die in another turn and then lock it tight. When seating a bullet stop when you feel the resistance of the shoulder. Obviously adjust to correct seating.

  3. #3
    Although I do not speak proper English, I do understand it and cannot for the life of me figure out what you are asking...

    SS

  4. #4
    Craggy find out what make your dies are then go and read the instructions on setting up your make of dies as the set up varies slightly between makes. Often you will find that the body of the die does not contact the shell holder when using the bullet seating die.

    I presume you are talking about your bullet seating die. It might help explain your problem if you use the correct terminology.


    Last edited by 8x57; 16-06-2014 at 20:26.
    It's the calibre of the shooter that counts not the calibre of the rifle.

  5. #5
    Do you and you mate have the same shell holder?

  6. #6
    My dies are lee
    when I mention head seating die, I am referring to the bullet seating die ( I have heard bullets being called heads, sorry )

    i have just read the lee booklet and it says put the case In holder and raise ram to die and screw down to touch then off half turn. Which is the way I got over my problem.

    Its seems i was setting it up wrong (plonker). The confusion was when I questioned my other mates procedure (also lee dies) he was getting no daylight between case holder and die.

    Maybe be the answer lies in the depth of the case holders as suggested

    thanks for advice
    craggy

  7. #7
    Glad you got it sorted but I would set the die up slightly differently to the way that you have just explained or at least as I understand it. I do exactly the same as Tramp has described in the duplicate thread you started i.e. use a case to feel for the crimping ridge inside the die. Not wishing to sound condescending but you do realise that the sizing die is set up quite differently to the seating die?

    Your mate has probably got a different press to you, so the retaining section of the press will be of a different thickness to your press. Hence perhaps why you have a larger gap between the bottom of the seating die and the shell holder, and as polestar says the shell holders may be of differing height.
    It's the calibre of the shooter that counts not the calibre of the rifle.

  8. #8
    Quote Originally Posted by 8x57 View Post
    Glad you got it sorted but I would set the die up slightly differently to the way that you have just explained or at least as I understand it. I do exactly the same as Tramp has described in the duplicate thread you started i.e. use a case to feel for the crimping ridge inside the die. Not wishing to sound condescending but you do realise that the sizing die is set up quite differently to the seating die?

    Your mate has probably got a different press to you, so the retaining section of the press will be of a different thickness to your press. Hence perhaps why you have a larger gap between the bottom of the seating die and the shell holder, and as polestar says the shell holders may be of differing height.
    Yep. Set the seating die up as you would a sizing die, and that's what'll happen to your brass, die. It'll push the shoulder in, bell out the body, and generally knacker the brass, in fact, hang on, I'll do one and photo it for you Click image for larger version. 

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    There you go. That's with the seating die screwed in half a turn, on a smooth bullet, it can't crimp, so kills the brass.

    Hope this helps

    Now where's my kinetic hammer.....

    Pete
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  9. #9
    I rectified my problem and it turned out to be the correct way to the booklet and to what tramp and 8 x 57 suggested.


    I also have have a crimping die although I haven't used it. I can't decide if it's really worth it ( not wanting to be a big target shooter ) opinions seam to be split.


    I have noticed my Full length sizing die sizes the internal neck measurement 0.1 mm smaller than my mates. I have loaded 5 of each to note the difference


    Tramp i I had two bell out below the neck, that's how I knew something wasn't right
    thanks
    craggy

  10. #10
    "I have noticed my Full length sizing die sizes the internal neck measurement 0.1 mm smaller than my mates. I have loaded 5 of each to note the difference"

    Are you sure that's not just because of neck thickness, perhaps different makes or batches of brass?

    I have used the factory crimp die on some loads and the chronograph has confirmed that crimped loads produce more consistent velocities. Whether this relates to greater accuracy at the limited ranges that I shoot at I don't know as I haven't noticed any great differences yet.
    It's the calibre of the shooter that counts not the calibre of the rifle.

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