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Rifles, Reloading, Optics, Equipment
Reloading
Standard Deviation & Extreme Spread - What does it take?
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<blockquote data-quote="rcoody" data-source="post: 1332632" data-attributes="member: 91090"><p>well with a hunting rifle i start with an OCW test at mag length. find my max and that node with 2 or 3 charges with little vertical change. if i have room i will stretch that out to a ladder test. if it is.a.range gun i start with a .010 jam.</p><p></p><p>then i run a seating depth test. i use .005 increments but berger's seating.depth test works too.</p><p></p><p>after i find.my seating depth i run another OCW or ladder test with small charge weigh increments</p><p></p><p>i may even try fine tuning seating.depth after that. suprising what a couple of thousandths can do sometimes.</p><p></p><p>after all that i pull out the magnetospeed and run 10 or 15 rounds over it. usually i am plesantly suprised. now anneal often, i weigh sort brass, neck turn, weigh powder with Adams Autotrickler to .02 gr, weigh sort bullets and sort by bearing length, i leave the carbon in my necks, use custom sizing dies, seat bullets with wilson inline dies with an arbor press with force gauge and sort by seating pressure and in the end sort loaded rounds by concentricity. now i probably have left some stuff out.</p><p></p><p>there is a lot of things you can do to lower ES & SD after you find a load. most are listed above. accurate powder charge and consistent neck tension are what i have found to make the most difference.</p><p></p><p>works for me</p></blockquote><p></p>
[QUOTE="rcoody, post: 1332632, member: 91090"] well with a hunting rifle i start with an OCW test at mag length. find my max and that node with 2 or 3 charges with little vertical change. if i have room i will stretch that out to a ladder test. if it is.a.range gun i start with a .010 jam. then i run a seating depth test. i use .005 increments but berger's seating.depth test works too. after i find.my seating depth i run another OCW or ladder test with small charge weigh increments i may even try fine tuning seating.depth after that. suprising what a couple of thousandths can do sometimes. after all that i pull out the magnetospeed and run 10 or 15 rounds over it. usually i am plesantly suprised. now anneal often, i weigh sort brass, neck turn, weigh powder with Adams Autotrickler to .02 gr, weigh sort bullets and sort by bearing length, i leave the carbon in my necks, use custom sizing dies, seat bullets with wilson inline dies with an arbor press with force gauge and sort by seating pressure and in the end sort loaded rounds by concentricity. now i probably have left some stuff out. there is a lot of things you can do to lower ES & SD after you find a load. most are listed above. accurate powder charge and consistent neck tension are what i have found to make the most difference. works for me [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Standard Deviation & Extreme Spread - What does it take?
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