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Hunting
Long Range Hunting & Shooting
.22 CM, help needed !
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<blockquote data-quote="Redfoot Ranch" data-source="post: 2787912" data-attributes="member: 118915"><p>Neck turning may or may not be necessary. If you're unsure of your rifle's chamber dimensions, turn on a few pieces to test fire so you can check the neck OD on the fired cases to determine if you have proper neck clearance.</p><p></p><p>When I started my 22 CM, there were no commercial dies available and I sized 6.5 brass down with bushing(s) - with no need to turn necks.</p><p>I necked down 6.5x47 brass for my 20x47L. I skimmed the first 50 pieces at the parent case caliber but after watching the NSJ move down into the shoulder after fire-forming, I longer turn necks on these and have no clearance issues.</p><p></p><p>It's a 1 piece sample, but I recently necked a piece of Alpha 6BRA brass down to 22 cal for measurements. The necked down case grew in length from 1.554" (10 case average) to 1.56" with a neck thickness increase of less than .00015.</p><p></p><p>DISCLAIMER - I did know my chamber dimensions for both of these examples based on reamer specs.</p></blockquote><p></p>
[QUOTE="Redfoot Ranch, post: 2787912, member: 118915"] Neck turning may or may not be necessary. If you're unsure of your rifle's chamber dimensions, turn on a few pieces to test fire so you can check the neck OD on the fired cases to determine if you have proper neck clearance. When I started my 22 CM, there were no commercial dies available and I sized 6.5 brass down with bushing(s) - with no need to turn necks. I necked down 6.5x47 brass for my 20x47L. I skimmed the first 50 pieces at the parent case caliber but after watching the NSJ move down into the shoulder after fire-forming, I longer turn necks on these and have no clearance issues. It's a 1 piece sample, but I recently necked a piece of Alpha 6BRA brass down to 22 cal for measurements. The necked down case grew in length from 1.554" (10 case average) to 1.56" with a neck thickness increase of less than .00015. DISCLAIMER - I did know my chamber dimensions for both of these examples based on reamer specs. [/QUOTE]
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.22 CM, help needed !
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