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Rifles, Reloading, Optics, Equipment
Reloading
Fire Forming to harden case heads....do you?
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<blockquote data-quote="Redfoot Ranch" data-source="post: 2523879" data-attributes="member: 118915"><p>Generally speaking, I fire-form and 'harden the case head' with a 90% load of QL max. This is usually accomplished with my cheaper, less desirable components with 50 pieces of new brass loaded at lands touch. I will seat deeper 4 pairs of loaded rounds in .009" increments OTL's - the final pair ending 36 thou off. I will shoot this first 10 acquiring a good avg MV and doing a coarse seating depth test. The remaining 40 rounds are seated deeper to the best shooting of the 5 depths and these may be shoot at fur or steel at a distance.</p><p></p><p>Interestingly, a pet load for my 6.5-284 with a 140 class bullet produces a high single digit ES/low single digit SD with new brass that I prepped and seasoned as explained above. I loaded 10 rounds of everything the same other than it was loaded into some once-fired brass I acquired in a trade. I had a hunch as easily as the primers seated that these would perform to my liking from a numbers standpoint, with an ES of 62 and an SD of 16.</p><p></p><p>To further some additional testing, tomorrow I am going to shoot 20 rounds in a side by side comparison with 10 cases of brass I prepped and that of this acquired fired brass at 4 targets. This will also show me on target what I believe I feel is a seating interference difference with 2 different neck lubes.</p><p></p><p>I think case hardening is worth it for longevity of brass life. I personally don't begin load development with this batch of brass until it's been fired this way.</p><p></p><p>My $.02</p></blockquote><p></p>
[QUOTE="Redfoot Ranch, post: 2523879, member: 118915"] Generally speaking, I fire-form and 'harden the case head' with a 90% load of QL max. This is usually accomplished with my cheaper, less desirable components with 50 pieces of new brass loaded at lands touch. I will seat deeper 4 pairs of loaded rounds in .009" increments OTL's - the final pair ending 36 thou off. I will shoot this first 10 acquiring a good avg MV and doing a coarse seating depth test. The remaining 40 rounds are seated deeper to the best shooting of the 5 depths and these may be shoot at fur or steel at a distance. Interestingly, a pet load for my 6.5-284 with a 140 class bullet produces a high single digit ES/low single digit SD with new brass that I prepped and seasoned as explained above. I loaded 10 rounds of everything the same other than it was loaded into some once-fired brass I acquired in a trade. I had a hunch as easily as the primers seated that these would perform to my liking from a numbers standpoint, with an ES of 62 and an SD of 16. To further some additional testing, tomorrow I am going to shoot 20 rounds in a side by side comparison with 10 cases of brass I prepped and that of this acquired fired brass at 4 targets. This will also show me on target what I believe I feel is a seating interference difference with 2 different neck lubes. I think case hardening is worth it for longevity of brass life. I personally don't begin load development with this batch of brass until it's been fired this way. My $.02 [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Fire Forming to harden case heads....do you?
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