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Rifles, Reloading, Optics, Equipment
Gunsmithing
Zermatt Orgin 6.5CM light primer strikes??? ( pic heavy)
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<blockquote data-quote="Z33Garage" data-source="post: 3080108" data-attributes="member: 129525"><p>Hello, first I would like to say that I read the couple existing threads on light primer strikes and followed the advice that was on those threads. I wanted to post my issue as well as magdump some photos I took with this build.</p><p></p><p>I purchased a Zermatt Origin and a Proof 6.5 Creedmoor barrel prefit for the Origin. Action was put together and headspace was checked with go/ no go gauges. Go gauge closes and no go does not as normal. I paired this with a triggertech Primary trigger. Action was torqued to the recomended 85lt lbs using the zermatt action wrench.</p><p>[ATTACH=full]561903[/ATTACH]</p><p></p><p>Today I went to the range to zero the rifle and test it with 4 different store bough ammo boxes ( hornady match, Norma match, federal 120g and Hornady black). I shot a total of 20 rounds, 15 of which had what seems to be light primer strikes. The 5 that did go off the primers looked slightly harder hit. None of the ammo had issues feeding, execting or signs of pressure excess or anything like that ( it was factory ammo). You can see the difference between the fired / non fired.</p><p></p><p>[ATTACH=full]561904[/ATTACH]</p><p>[ATTACH=full]561905[/ATTACH]</p><p></p><p>I took some of the ammo and shot it out of my beraga B14 and it shot no problem, Thinking maybe the ammo might be bad.</p><p></p><p>I took the gun apart at home and checked headspace once more and go works, no go does not. I removed the trigger and re installed it. Took the bolt apart and cleaned ( no excess grease on the firing pin or anything ) I took some Hornady brass that I was reloading and added some CCI primers to them <strong>( NO LIVE ROUNDS). </strong>I hand fed the primed ONLY casings into the chamber, and 10/11 rounds went off. The 11th round had a light primer strike. I added 5 more rounts with primers and yet again light primer strikes.</p><p>[ATTACH=full]561906[/ATTACH]</p><p></p><p>[ATTACH=full]561907[/ATTACH]</p><p></p><p>[ATTACH=full]561908[/ATTACH]</p><p>[ATTACH=full]561909[/ATTACH]</p><p></p><p></p><p>The one with the blue tape is the round that upon firing the primer did not go off.</p><p></p><p>[ATTACH=full]561910[/ATTACH]</p><p></p><p></p><p></p><p>One thing I did find weird was that I measured how far the firing pin went in when the trigger was pulled OUT of the chassis and in the chassis and I came back with 2 different numbers.</p><p>OUT OF THE ACTION</p><p>[ATTACH=full]561911[/ATTACH]</p><p></p><p>In the action ( Im not sure if this is significant or not.) I checked the action screws to make sure they werent blocking anything and no they were just fine.</p><p>[ATTACH=full]561912[/ATTACH]</p><p></p><p></p><p>I have no way to test the trigger vs a stock factory trigger or whatnot ( unless you all can think of a way)</p><p>I was wonder if maybe you guys can offer me some help in diagnosing this issue?</p><p></p><p>2 videos also</p><p></p><p>I also made 2 videos to see what I was attempting.</p><p></p><p>[MEDIA=youtube]2U7tP3nmN58[/MEDIA]</p><p></p><p>and once on the action</p><p></p><p>[MEDIA=youtube]eaj2Qi_OIOY[/MEDIA]</p></blockquote><p></p>
[QUOTE="Z33Garage, post: 3080108, member: 129525"] Hello, first I would like to say that I read the couple existing threads on light primer strikes and followed the advice that was on those threads. I wanted to post my issue as well as magdump some photos I took with this build. I purchased a Zermatt Origin and a Proof 6.5 Creedmoor barrel prefit for the Origin. Action was put together and headspace was checked with go/ no go gauges. Go gauge closes and no go does not as normal. I paired this with a triggertech Primary trigger. Action was torqued to the recomended 85lt lbs using the zermatt action wrench. [ATTACH type="full" alt="PXL_20240407_183909995.jpg"]561903[/ATTACH] Today I went to the range to zero the rifle and test it with 4 different store bough ammo boxes ( hornady match, Norma match, federal 120g and Hornady black). I shot a total of 20 rounds, 15 of which had what seems to be light primer strikes. The 5 that did go off the primers looked slightly harder hit. None of the ammo had issues feeding, execting or signs of pressure excess or anything like that ( it was factory ammo). You can see the difference between the fired / non fired. [ATTACH type="full" alt="Capture.PNG"]561904[/ATTACH] [ATTACH type="full" alt="lightvsHARD.PNG"]561905[/ATTACH] I took some of the ammo and shot it out of my beraga B14 and it shot no problem, Thinking maybe the ammo might be bad. I took the gun apart at home and checked headspace once more and go works, no go does not. I removed the trigger and re installed it. Took the bolt apart and cleaned ( no excess grease on the firing pin or anything ) I took some Hornady brass that I was reloading and added some CCI primers to them [B]( NO LIVE ROUNDS). [/B]I hand fed the primed ONLY casings into the chamber, and 10/11 rounds went off. The 11th round had a light primer strike. I added 5 more rounts with primers and yet again light primer strikes. [ATTACH type="full" alt="PXL_20240407_175045902.jpg"]561906[/ATTACH] [ATTACH type="full" alt="PXL_20240407_180213059.jpg"]561907[/ATTACH] [ATTACH type="full" alt="go.PNG"]561908[/ATTACH] [ATTACH type="full" alt="nOGO.PNG"]561909[/ATTACH] The one with the blue tape is the round that upon firing the primer did not go off. [ATTACH type="full" alt="PXL_20240407_193234894.jpg"]561910[/ATTACH] One thing I did find weird was that I measured how far the firing pin went in when the trigger was pulled OUT of the chassis and in the chassis and I came back with 2 different numbers. OUT OF THE ACTION [ATTACH type="full" alt="PXL_20240407_180410125.jpg"]561911[/ATTACH] In the action ( Im not sure if this is significant or not.) I checked the action screws to make sure they werent blocking anything and no they were just fine. [ATTACH type="full" alt="PXL_20240407_183615322.jpg"]561912[/ATTACH] I have no way to test the trigger vs a stock factory trigger or whatnot ( unless you all can think of a way) I was wonder if maybe you guys can offer me some help in diagnosing this issue? 2 videos also I also made 2 videos to see what I was attempting. [MEDIA=youtube]2U7tP3nmN58[/MEDIA] and once on the action [MEDIA=youtube]eaj2Qi_OIOY[/MEDIA] [/QUOTE]
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Zermatt Orgin 6.5CM light primer strikes??? ( pic heavy)
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