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Thread: Johnny's Reloading Bench temperature sensitivity testing

  1. #1
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    Johnny's Reloading Bench temperature sensitivity testing

    Should be of interest for those of us shooting in wide temperature ranges.


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    This is an exciting new powder. Iím very interested in giving it a go, but Iím not sure how valid Johnnyís technique is.


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  3. #3
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    I watched the video and can say I'm not surprised that a ball powder can't live up to the hype compared to the proven extruded offerings in temp stability. I was skeptical from the first announcement. A man can dream for an easy metering spherical powder that doesn't move with temps though.

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    This seems like a slower-burning version of dense ball powders like Alliant 2000-MR. These new generation powders are indeed better than older stuff like H335, BLC-2, H414, etc... But they are still are not as good as the extruded powders.

    Closest we can get to the pipe dream is short-cut, small grain extruded powders like 8208 XBR

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    The videoís testing procedure is wrong and real conclusions canít be drawn. He just picked random loads.

    None of the loads were tuned to the gun. If one is outside the node, temperature variation has a greater impact than it does when a load is firmly planted in the middle of the node. I take it with a grain of salt. The powder could be descent or it could be terrible as well.

    Before I could decide, I would want to develop a load at a moderate temperature and ensure that +/- 0.2 gr. of my target load did not have a significant impact on my velocity. That would help insulate the load, to some degree, from temperature swings.

    While Iíve loaded a fair bit of ammo on progressive presses, even ball powder has proven not to meter up to my expectations with the onboard powder dispensers. Iíve taken to throwing cases in an electronic dispenser/scale combination using a powder funnel die. Itís mildly slower, but something like an Auto Trickler makes it a minor inconvenience.


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  6. #6
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    Quote Originally Posted by lsllc View Post
    It’s mildly slower, but something like an Auto Trickler makes it a minor inconvenience.
    Since we're in the reloading forum...

    How does the Auto Trickler compare with something like an RCBS Chargemaster?

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    Quote Originally Posted by Bimmer View Post
    Since we're in the reloading forum...

    How does the Auto Trickler compare with something like an RCBS Chargemaster?
    Itís significantly faster and significantly more accurate. I get as much as a half grain drift with the chargemaster. This can be mitigated a few ways and makes ďgood enoughĒ ammunition. The scale just isnít up to snuff.

    The auto trickler is a true lab grade scale.


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  8. #8
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    Quote Originally Posted by lsllc View Post
    The auto trickler is a true lab grade scale...
    I can't even find a price for it... I bet it's way more than $200, right? (That's what a Chargemaster Lite costs.)

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    Quote Originally Posted by Bimmer View Post
    I can't even find a price for it... I bet it's way more than $200, right? (That's what a Chargemaster Lite costs.)
    Yeah youíre looking closer to a grand.

    Area 419 sells them set up. Brownells sells the parts and you can assemble your own.

    RCBS has a new version coming out called the Matchmaster or something such which claims 0.02gr accuracy and sub ten second charges which is as fast as I could run my progressive press anyway with manual bullet and case feeding (which I want for Precision loads).


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  10. #10
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    Quote Originally Posted by Bimmer View Post
    I can't even find a price for it... I bet it's way more than $200, right? (That's what a Chargemaster Lite costs.)
    Like $1400

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