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Rifles, Reloading, Optics, Equipment
Gunsmithing
Win M70 CRF extractor tension
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<blockquote data-quote="MagnumManiac" data-source="post: 1490962" data-attributes="member: 10755"><p>The only collars I have seen that were 'springy' are off Mauser '96 actions, even then it was hit or miss as to what one you would get.</p><p>Most are soft as you describe, the problem is making them round again once back on the bolt. When you remove them, they distort in the weakest area, which creates a 'wrinkle', this is hard to remove unless you force the collar around the bolt, as I do with the locking pliers and shims.</p><p>You need good compression on the collar as you slide the extractor in place, this helps align it squarely.</p><p>If you push on your extractor just behind the collar, how much tension can you feel?</p><p>If the tension is light and an empty case slips under the extractors claw and wiggles, it may be that your extractor is too loose or worn.</p><p>It's very rare that a collar is the cause of a problem with extraction. Timing of the feed rails can and does interfere with HOW the cartridge is picked up. The extractor utilises the spring from it's shape and also from the collar by pulling on it, if the extractor is not sprung enough, your situation can occur where it drops the case.</p><p>I think it's your extractor tension causing the issue, not the collar.</p><p>You may need to replace the extractor, not the collar.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1490962, member: 10755"] The only collars I have seen that were ‘springy’ are off Mauser ‘96 actions, even then it was hit or miss as to what one you would get. Most are soft as you describe, the problem is making them round again once back on the bolt. When you remove them, they distort in the weakest area, which creates a ‘wrinkle’, this is hard to remove unless you force the collar around the bolt, as I do with the locking pliers and shims. You need good compression on the collar as you slide the extractor in place, this helps align it squarely. If you push on your extractor just behind the collar, how much tension can you feel? If the tension is light and an empty case slips under the extractors claw and wiggles, it may be that your extractor is too loose or worn. It’s very rare that a collar is the cause of a problem with extraction. Timing of the feed rails can and does interfere with HOW the cartridge is picked up. The extractor utilises the spring from it’s shape and also from the collar by pulling on it, if the extractor is not sprung enough, your situation can occur where it drops the case. I think it’s your extractor tension causing the issue, not the collar. You may need to replace the extractor, not the collar. Cheers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Win M70 CRF extractor tension
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