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Thread: 15 thou. headspace on M1917... what to do?

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    Member fguffey's Avatar
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    The ‘X’ die is not sold with the understanding the case will not get longer, the instructions instruct the user to ‘first trim the case .020” ’. By the time the case requires trimming it will be time to start on another case.

    From the beginning this thread has not been about the length of the case from the head of the case to the end of the neck, this thread has been about .015” difference in length between the chamber from the bolt face to the shoulder when compared with the case length from the head of the case to its shoulder/datum.

    “That is a fine old gun that would have always been "defective" to some” The Remington without the milled hole in the rear receiver sight bridge is my first choice. The Winchester is my second choice. The Eddystone is anyone's guess according to Roy Dunlap. I have an Eddystone that is cracked, Don W. has another.

    15 firings and verifying, I am the fan of verifying, I adjust my dies every time I use them, I make my adjustment with a feeler gage then secure the die to the press with the lock ring. Others make wild guestimates of fractional turns or in degree converted to thousandths, Me? I skip the fractional turn, I skip the wild guess when converting degree to thousandths, I go straight to the feeler gage to make my adjustments, the verifier? The feeler gage is the verifier, it is a standard, it is a transfer. Good shop practice, I could use a height gage, I could use the dial caliper (small end).

    Chambers of .015”+ is not uncommon with Eddystones, the long chamber is about as common as reloaders that insist on full length sizing, most reloaders are fire formers, they pull the trigger, THEN! they become fire formers, again I am a case former, I had rather move the shoulder back as in ‘case forming’ than move the shoulder forward, think about it, move the shoulder forward?

    F. Guffey


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