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Powder question

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13 comments

  • jwharding
    Are IMR4350 and H4350 the same powder.
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  • 62fuelie
    When I finish for the day I empty the measure. The air here in CO is too dry and I want the powder to be in the more controlled environment of its can. I would think the opposite conditions in MS would pose similar concerns. If the powder, even with the cap on the measure hopper, absorbs or loses moisture it will affect the weight of the powder and throw your loads off. Just my SWAG on the question.
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  • CapnMidnight
    I always empty mine, always been a habit, I don't like leaving powder out in the elements.
    W.D.
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  • charliemeyer007
    I bet the match shooter's put it away when done for the day. For regular reloading a day or two in the capped hopper likely will not make much difference. You could check your group size to see if it actually does have an measurable influence. One of the advantages of keeping a good note book. I hope your heath is improving.
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  • perry shooter
    Believe it or not many powder measures will result with a FOGGED /ruined powder reservoir.
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  • noylj
    I bet the match shooters (or at least the action pistol shooters I know) leave the powder in and are ready to load some additional rounds as time is available.
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  • PA Shootist
    I have made a habit of emptying the powder measure for my general reloading, because of possible mis-identification of the powder. Except, I have a couple Square Deal B's set up for my oft-repeated loadings of target pistol cartridges. For those, I always use the same powder and charge, and I never empty the measure. I use them often. I haven't seen any adverse reactions to the plastic measure. And my reloading room is very constant temperature, and no light when lights are off.
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  • bpost
    Empty it. If you don't one day you will forget the type of powder that is in there. Take the time to put the powder back into the factory can. There is no room for POTENTIAL errors when reloading.
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  • Hawk Carse
    I leave my Dillon powder measures loaded, the can behind the press, nothing else nearby. The plastic has gradually darkened but shows no damage.

    I once left a RCBS Uniflo filled and that was a mistake. The powder ate its way into the plastic hopper. Residual solvent or nitroglycerine in the double base powder, I don't know which. But they sure did not use a resistant plastic. Silly economizing when there are plastics inert enough for powder shipping and storage.
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  • jwharding
    I haven't left powder in the press for very long maybe a day or so. It takes me a while to set everything up and sometimes I have to quit for a while, before I can continue loading. Never over a day or two. Thanks for the answers
    JW
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  • charliemeyer007
    I never let the hopper drop below half, and I throw every 10th on the scales. I also do a visual/comparison check on the charged loading block.
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  • JustC
    I never leave powder in the dispenser.
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  • RobOz
    I would be afraid my girlfriend would dump some Unique in my hopper full of BLC2. She's been known to hold a grudge.
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