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Thread: Dillon .308 headspace gauge dimensions

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    Dillon .308 headspace gauge dimensions

    Does anybody know what the minimum Go and the maximum Go dimensions the Dillon .308 headspace gauge is set for?
    I tried calling and emailing Dillon with no response.

    http://www.dillonprecision.com/#/con...fle_Case_Gages

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    Re: Dillon .308 headspace gauge dimensions

    I'd take a wild guess and say SAAMI spec... 1.630" to 1.634" for headspace
    All right, breaks over. Back on your heads!!

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    Re: Dillon .308 headspace gauge dimensions

    Dillion is running ~ 7 days in response to email.

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    Re: Dillon .308 headspace gauge dimensions

    It has been two weeks

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    Re: Dillon .308 headspace gauge dimensions

    Whatever it is, it's loose as hell on mine.

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    Re: Dillon .308 headspace gauge dimensions

    Thanks for bringing this up.

    I've been using a Dillon case gage for .308 Win for about 12 years or so, since I used to own a select-fire FN-FAL and occasionally load belts to shoot on a friend's 1919.

    I've processed several tens of thousands of cases with a Dillon carbide die set setting up with the gage and a 6" steel rule held perpendicular to the base end. I slide the square end of the rule along the base of the gage onto the case head and feel for it to stop against first the case head, then the ridge on the other side of the gage to make sure the cases are coming out between the high and low values. It works.

    What I've always found interesting is, factory ammo is set at or below the minimum headspace (completed, new cartridges drop farther into the gage) when checked with that gage. Black Hills, Federal, Winchester, even South African milsurp, Cavim, others. Figure it's better to have more headspace than less, but it's just a point of interest.
    "Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats." - H. L. Mencken

    "Every man, woman, and responsible child has an unalienable individual, civil, Constitutional, and human right to obtain, own, and carry, openly or concealed, any weapon -- rifle, shotgun, handgun, machinegun, anything -- any time, any place, without asking anyone's permission." The Atlanta Declaration: by L. Neil Smith 1987

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    Re: Dillon .308 headspace gauge dimensions

    I found out that 1.634" is max deminsion from the datum line on the shoulder to the edge of the top step with the Dillon .308 case gauge.