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Rifles, Reloading, Optics, Equipment
Reloading
300 RUM and 230 Berger Hybrid project
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<blockquote data-quote="ajridgedell" data-source="post: 1079827" data-attributes="member: 30426"><p>All my ladder tests are done in a gun vise that allows the gun to recoil similar to how it recoils when shoulder fired. The gun is mechanically aligned to target and remotely fired by an air diaphragm inside the trigger guard. I have absolutely no doubts that the sights are on target when the striker hits the primer. I didn't know what else would cause these pressure signs to start showing up at those powder charges when they have not previously shown up earlier in my test. I believe even though the brass didn't show those ejector swipes at the same charges earlier and at even higher air temperatures, they still very well may have been over pressure, possibly just random that these pressure signs showed up now, or something else maybe contributing?</p><p>I will still take your advise and work the 88.4 to 89.6 range, but I find it interesting that the velocities are slower for that range of power charge then my previous ladder test. I think I have the base model shooting chrony so I don't know how much faith to put in those numbers.</p></blockquote><p></p>
[QUOTE="ajridgedell, post: 1079827, member: 30426"] All my ladder tests are done in a gun vise that allows the gun to recoil similar to how it recoils when shoulder fired. The gun is mechanically aligned to target and remotely fired by an air diaphragm inside the trigger guard. I have absolutely no doubts that the sights are on target when the striker hits the primer. I didn't know what else would cause these pressure signs to start showing up at those powder charges when they have not previously shown up earlier in my test. I believe even though the brass didn't show those ejector swipes at the same charges earlier and at even higher air temperatures, they still very well may have been over pressure, possibly just random that these pressure signs showed up now, or something else maybe contributing? I will still take your advise and work the 88.4 to 89.6 range, but I find it interesting that the velocities are slower for that range of power charge then my previous ladder test. I think I have the base model shooting chrony so I don't know how much faith to put in those numbers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 RUM and 230 Berger Hybrid project
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