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Accuracy Loss
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<blockquote data-quote="LaHunter" data-source="post: 2135424" data-attributes="member: 54963"><p>Looking at the photo, it looks like you have some carbon there. Sounds like you have some good info and a plan to address that. Carbon rings can be tough to remove. If a carbon ring gets bad enough, it can show pressure signs. How is your bolt lift after firing?</p><p>Take a close look at your fired brass looking for pressure signs. As mentioned above, a reliable chrono is a useful trouble shooting tool.</p><p></p><p>The 'cracking' is normal wear. You can begin to see signs of cracking in a 300 WM or 7 mm rem mag within 150 rounds if you look closely.</p><p>For your rifle to go from .5 moa to 2 moa in one session, that makes me think a mechanical issue or maybe you made a mistake while loading your ammo?? Is your current ammo all from the same loading session? Checking the torque on all screws is a good idea.</p><p></p><p></p><p>Good luck</p></blockquote><p></p>
[QUOTE="LaHunter, post: 2135424, member: 54963"] Looking at the photo, it looks like you have some carbon there. Sounds like you have some good info and a plan to address that. Carbon rings can be tough to remove. If a carbon ring gets bad enough, it can show pressure signs. How is your bolt lift after firing? Take a close look at your fired brass looking for pressure signs. As mentioned above, a reliable chrono is a useful trouble shooting tool. The 'cracking' is normal wear. You can begin to see signs of cracking in a 300 WM or 7 mm rem mag within 150 rounds if you look closely. For your rifle to go from .5 moa to 2 moa in one session, that makes me think a mechanical issue or maybe you made a mistake while loading your ammo?? Is your current ammo all from the same loading session? Checking the torque on all screws is a good idea. Good luck [/QUOTE]
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