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Thread: Stiff bullet seating

  1. #1

    Stiff bullet seating

    Seating needs a lot of pressure on the press arm even with sizing wax around the neck - impossible without and will buckle the shoulder if attempted. Could this be neck thickness? I've not gone down this route yet (neck thickness and turning) and would rather not either.
    Specifics,
    .308 Sako case, neck sized and on their 1st reloads (fired 1st as factory ammo).
    Sierra 165gr BTSPs
    redding seating die (with aftermarket micrometer adjustment) and redding press.

    Have been reloading with this caliber and number of others for some years now and not had this problem. Any ideas?
    Last edited by Tackleberry270; 08-07-2013 at 15:46. Reason: Corrections

  2. #2
    to state the obvious , have to checked the o/d of the bullets youre trying to seat
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  3. #3
    what sizing die are you using and have you used this norma brass before as they do have thick necks,I would check the bullet OD to start with

  4. #4
    You've used this exact set up to successfully reload other 308 rounds?? If not, and after bullet diameter check, I'd look to the expander ball or the A/M seater.~Muir

  5. #5
    I'm guessing that bullets may be .311" diameter - i.e for 303 rifle.

    As a follow on from this does anyone know what the effect would be from shooting .311" bullets from a 308 barrel in the real world? (assuming that you could load them into the case & chamber them)

    ​Ian

  6. #6
    Quote Originally Posted by Yorric View Post
    I'm guessing that bullets may be .311" diameter - i.e for 303 rifle.

    As a follow on from this does anyone know what the effect would be from shooting .311" bullets from a 308 barrel in the real world? (assuming that you could load them into the case & chamber them)

    ​Ian
    You will get some increased pressure and, unless the neck of your rifle's chamber is generous enough to accommodate that .311" bullet, you could blow the breech of your rifle. In a commercial sporting rifle that might be an unlikely occurrence but you never know. I'd pull them.

    FWIW I pulled some bullets from some early US import S&B ammo and all the bullets were .310". Seems they used one bullet for 30-06, 7.62x54R and 303 British... or so I guessed at the time. Never heard any ill reports other than crummy accuracy.~Muir

  7. #7
    Quote Originally Posted by Yorric View Post
    As a follow on from this does anyone know what the effect would be from shooting .311" bullets from a 308 barrel in the real world? (assuming that you could load them into the case & chamber them)

    ​Ian
    Well Ruger builds all it's 7.62x39 rifles on a .308" barrel without any issues.

    Neil.

  8. #8
    thanks guys. More info,

    Bullet is definitely .308
    Neck diameter with bullet seated is .334

  9. #9
    I always have a slight chamfer on the inner lip of the case . Have you measured the inside diameter of a sized case , and then micrometer a bullet diameter , also are you sizing with a bushing die and getting to much tension .

    Cheers

  10. #10
    Sounds like you've got a slight lip on the inside of the case mouth - are you cleaning with Stainless Steel media by any chance? Using that method will peen the ID and chamfering is required to remove it. I'd run over an expander ball again and put a VLD chamfer on.

    I deliberately load some of my loads on full sized cases with the expander ball removed to create more neck tension (typically for tracer or FMJ rounds) and never have a problem seating them.

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