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Rifles, Reloading, Optics, Equipment
Reloading
New gun, how do I find a LR load in 2 weeks?
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<blockquote data-quote="Forester" data-source="post: 225286" data-attributes="member: 11102"><p>My fastest way to find the best load with a given combination of powder/bullet/cases/primer is to load about a 10-12 shot ladder. in big cases I use a .3gr increment and in small cases .1gr in a .308 sized case I use .2gr. I have rarely been lead astray by picking whatever powder Sierra lists as their choice for accuracy for a given bullet weight. I would seat to maximum magazine length and let go of the fact that that may not be the very best until you are done messing with other variables.</p><p></p><p>I would shoot the ladder at the farthest distance you can where you think <em>any</em> difference in bullet impact will be due to the load not the shooter. On a calm day 300 yards works well for me.</p><p></p><p>I use the shots impact on paper as a guide but probably gain more from the chrono than anything. Pick out the fastest node you find and load 2 3 shot groups for a given powder charge. All told, to get darn close to the best possible load you have less than 30 shots.</p><p></p><p>To pick a primer I would first go with whatever match primer you already have that seems suitable, to decide between two I would work a load up with one as above and then load some exactly the same with each primer. The one with the roundest groups and least vertical/least ES I would go with.</p><p></p><p>For cases, I would weigh a bunch of each and pick the lot with the lowest weight variations. I would fireform then neck size with a Lee Collet Die before load workup because its a factory barrel with what is likely a comparatively loose chamber. uniform flashholes and primer pockets just to eliminate a variable.</p></blockquote><p></p>
[QUOTE="Forester, post: 225286, member: 11102"] My fastest way to find the best load with a given combination of powder/bullet/cases/primer is to load about a 10-12 shot ladder. in big cases I use a .3gr increment and in small cases .1gr in a .308 sized case I use .2gr. I have rarely been lead astray by picking whatever powder Sierra lists as their choice for accuracy for a given bullet weight. I would seat to maximum magazine length and let go of the fact that that may not be the very best until you are done messing with other variables. I would shoot the ladder at the farthest distance you can where you think [I]any[/I] difference in bullet impact will be due to the load not the shooter. On a calm day 300 yards works well for me. I use the shots impact on paper as a guide but probably gain more from the chrono than anything. Pick out the fastest node you find and load 2 3 shot groups for a given powder charge. All told, to get darn close to the best possible load you have less than 30 shots. To pick a primer I would first go with whatever match primer you already have that seems suitable, to decide between two I would work a load up with one as above and then load some exactly the same with each primer. The one with the roundest groups and least vertical/least ES I would go with. For cases, I would weigh a bunch of each and pick the lot with the lowest weight variations. I would fireform then neck size with a Lee Collet Die before load workup because its a factory barrel with what is likely a comparatively loose chamber. uniform flashholes and primer pockets just to eliminate a variable. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
New gun, how do I find a LR load in 2 weeks?
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