Dang powder weight variance

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Dang powder weight variance

Post by Tubs » 29 Jun 2020, 8:28 pm

Hi all, Im reloading 9mm out of an old Dillon Square Deal.

If I weigh each load as it comes through the powder die I see similar powder weights each time.

But! When I use a bulletpuller to pull each round apart to confirm powder weight there is always way less powder than what I loaded/expect e: 2.5 gn instead of 3.5gn

Can powder fly out the back of the bullet puller? That is all I can think of..... The pullers have a hole in the back....

Stumped!

Thanks
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Re: Dang powder weight variance

Post by deanp100 » 29 Jun 2020, 8:42 pm

I was using a bullet puller on the weekend and there was powder everywhere, but I wouldn’t have thought I was losing a grain every time.
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Re: Dang powder weight variance

Post by bladeracer » 29 Jun 2020, 9:11 pm

Tubs wrote:Hi all, Im reloading 9mm out of an old Dillon Square Deal.

If I weigh each load as it comes through the powder die I see similar powder weights each time.

But! When I use a bulletpuller to pull each round apart to confirm powder weight there is always way less powder than what I loaded/expect e: 2.5 gn instead of 3.5gn

Can powder fly out the back of the bullet puller? That is all I can think of..... The pullers have a hole in the back....

Stumped!

Thanks


Weigh the loaded round, then dump the case, bullet and powder from the puller for comparison.
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Re: Dang powder weight variance

Post by Tubs » 29 Jun 2020, 11:09 pm

Lost half a grain of powder out of the system... ta
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Re: Dang powder weight variance

Post by bladeracer » 30 Jun 2020, 12:29 am

Tubs wrote:Lost half a grain of powder out of the system... ta


Weird, I generally dump the bullet and powder into the pan, lift the bullet out, put the pan on the scale and read the scale. I don't think I've seen any discrepancy that was not obviously due to spilled powder.
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Re: Dang powder weight variance

Post by Tubs » 30 Jun 2020, 6:23 am

Yes, I believe it to be the result of spilled powder that has flown out of the bullet puller
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