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Rifles, Reloading, Optics, Equipment
Reloading
Need some help totally baffled
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<blockquote data-quote="DartonJager" data-source="post: 2308024" data-attributes="member: 95733"><p>OK here's what I found.</p><p></p><p>Checked and confirmed primers are not the issue.</p><p>Checked and the screws for the scope base are recessed quite deeply into the receiver and can not be making contact. </p><p>Pulled the bullets from three live rounds of the ammo that didn't fit. Measured again all three for brass length from base to shoulder. Brass piece #1-was 1.6185 #2-was 1.6185 #3-was 1.61855</p><p></p><p>Chambered all three all three bolt was still difficult to close, so it was most likely NOT the bullet.</p><p>Used my Redding body only sizing die (only sizing die I have in 308 other than my Lee Collet) and resized all three bumping the shoulder back 0.0020-0.0025"</p><p>Now all three chambered butter smooth without issue using normal bolt force identical to the other rounds.</p><p>Re-sized brass measures 1.6165-1.6160"</p><p></p><p>Did miss one very important thing. After I chambered the resized brass I looked over the brass I had colored with the Sharpie and looked very closely and sure enough saw a hair thin line formed around where the neck meets the shoulder indicating contact between the shoulder and the chamber and was almost certainly my problem.</p><p></p><p>I then remeasured the ammo that had no fit issues and discovered for reasons that completely escape me I obviously measured incorrectly as the ammo now measured from base to shoulder 1.6155 to 1.6140 or an error of at least 0.003" to as much as .004"</p><p></p><p>Again as I sit confused here reading my SAMMI sheet on the 308 Win it reads that the max length from base to where the shoulder meets the neck is 1.7116 and all the Federal factory ammo I have is WAY below that maximum measurement.</p><p>Am I missing something?</p><p></p><p>I am to tired now to dig into this any more and I wont have any more time until 3-5 days from now. I have 300 pieces if new Lapua 308 brass so I will measure a few of them, size them with my Redding BOSD and then my Lee Collet die and see what measurements I get and how the new sized brass chambers.</p><p></p><p>At any rate SEAMS like I have found and solved my problem. </p><p>Thanks to all for your help and for your time to do so.</p><p></p><p>Will report back when I measure and then size the Lapua brass.</p></blockquote><p></p>
[QUOTE="DartonJager, post: 2308024, member: 95733"] OK here's what I found. Checked and confirmed primers are not the issue. Checked and the screws for the scope base are recessed quite deeply into the receiver and can not be making contact. Pulled the bullets from three live rounds of the ammo that didn't fit. Measured again all three for brass length from base to shoulder. Brass piece #1-was 1.6185 #2-was 1.6185 #3-was 1.61855 Chambered all three all three bolt was still difficult to close, so it was most likely NOT the bullet. Used my Redding body only sizing die (only sizing die I have in 308 other than my Lee Collet) and resized all three bumping the shoulder back 0.0020-0.0025" Now all three chambered butter smooth without issue using normal bolt force identical to the other rounds. Re-sized brass measures 1.6165-1.6160" Did miss one very important thing. After I chambered the resized brass I looked over the brass I had colored with the Sharpie and looked very closely and sure enough saw a hair thin line formed around where the neck meets the shoulder indicating contact between the shoulder and the chamber and was almost certainly my problem. I then remeasured the ammo that had no fit issues and discovered for reasons that completely escape me I obviously measured incorrectly as the ammo now measured from base to shoulder 1.6155 to 1.6140 or an error of at least 0.003" to as much as .004" Again as I sit confused here reading my SAMMI sheet on the 308 Win it reads that the max length from base to where the shoulder meets the neck is 1.7116 and all the Federal factory ammo I have is WAY below that maximum measurement. Am I missing something? I am to tired now to dig into this any more and I wont have any more time until 3-5 days from now. I have 300 pieces if new Lapua 308 brass so I will measure a few of them, size them with my Redding BOSD and then my Lee Collet die and see what measurements I get and how the new sized brass chambers. At any rate SEAMS like I have found and solved my problem. Thanks to all for your help and for your time to do so. Will report back when I measure and then size the Lapua brass. [/QUOTE]
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Need some help totally baffled
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