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Rifles, Reloading, Optics, Equipment
Reloading
Need brass annealing advice
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<blockquote data-quote="Saskquatch6" data-source="post: 2110491" data-attributes="member: 58704"><p>Catamountsierra says it so well I won't repeat - however I just recently started SBA because I was frustrated by inconsistent neck tension and shoulder bump from work/fire hardened brass. So I measured 10 cases of 4x fired Winchester 300 WSM brass then annealed them (530•C/6s) and bumped the shoulder .002" using custom RCBS sizing die (stem removed). One case out of the 10 bumped .0035 greater than the 1.7410" shoulder target and of the rest 7 were at 1.7410" +/- .0005" and 2 were +/- .001". I then neck sized with Lee Collet die and when seating 165 Accubonds I can say it felt the smoothest and most consistent since using virgin brass. I know for some this small sample does not give spectacular numbers, but for me they are a huge improvement over case prep without annealing. SBA seemed to work really well and I expect brass life to be extended significantly. Hopefully group size will be positively impacted as well (but it's going to have to get a whole lot warmer around here to test that out!) Just a couple of additional thoughts - I downloaded a free metronome app on my phone and found it easy to hear the seconds tick as I focused my attention on the annealing process, brass, etc. Secondly I purchased the kit from Ballistics Recreations and bought the regular case holder - the 300WSM case just fit and when heated it was a bit snug - a few minutes with dremmel tool and all was good. Certainly not saying SBA is the best annealing system but it is relatively inexpensive, easy, consistent and does the job I want it to.</p></blockquote><p></p>
[QUOTE="Saskquatch6, post: 2110491, member: 58704"] Catamountsierra says it so well I won’t repeat - however I just recently started SBA because I was frustrated by inconsistent neck tension and shoulder bump from work/fire hardened brass. So I measured 10 cases of 4x fired Winchester 300 WSM brass then annealed them (530•C/6s) and bumped the shoulder .002” using custom RCBS sizing die (stem removed). One case out of the 10 bumped .0035 greater than the 1.7410" shoulder target and of the rest 7 were at 1.7410” +/- .0005" and 2 were +/- .001". I then neck sized with Lee Collet die and when seating 165 Accubonds I can say it felt the smoothest and most consistent since using virgin brass. I know for some this small sample does not give spectacular numbers, but for me they are a huge improvement over case prep without annealing. SBA seemed to work really well and I expect brass life to be extended significantly. Hopefully group size will be positively impacted as well (but it’s going to have to get a whole lot warmer around here to test that out!) Just a couple of additional thoughts - I downloaded a free metronome app on my phone and found it easy to hear the seconds tick as I focused my attention on the annealing process, brass, etc. Secondly I purchased the kit from Ballistics Recreations and bought the regular case holder - the 300WSM case just fit and when heated it was a bit snug - a few minutes with dremmel tool and all was good. Certainly not saying SBA is the best annealing system but it is relatively inexpensive, easy, consistent and does the job I want it to. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Need brass annealing advice
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