Home Forums Hunting & Shooting Ask The Gunwriters Mule Deer's Exact Amount of Powder Article, definition of variation

MD,

I finally got my hands on a copy of Handloader with your "exact" amount of powder article. Hopefully I'm not missing something obvious, but I don't see where the term variation is defined for the thrown powder charge consistency chart.

Is it the average absolute difference from the mean weight for a string of charges? The sample standard deviation for a string? Or am I just missing it?

Thanks,
mm

What I first tried to do was set each measure to throw the specific charge weights as closely as possible. This usually required throwing several charges, both because of trial and error in the setting, and because it takes a little while for powder to settle consistently in a measure, even with a baffle.

Once the charges were varying about the same amount above and below the specific charge weight, I then threw 10 consecutive charges and recorded their exact weights. The total variation was then divided by two, to come up with the possible variation from the ideal charge weight.

Obviously this required a judgement call about when the thrown charges hover an equal amount on either side of the desired charge--but that's how we use powder measures.

Please ignore the percentage numbers. They got screwed up because I decided to add them at the last moment. This turned out to be a bad idea for several reasons, the biggest being a death in my family. Consequently my concentration wasn't what it should have been.

Also

For HG ammo

The diff is much more significant.

What is HG ammo?

I think HG is "handgun" - in textese.

Sorry to hear about your loss John. Having recently lost my mother, for whom I'd been the primary caretaker for a couple of years, I understand about loss of focus.

Sorry for your loss

Tom

Same here.

Thanks very much for the condolences, everybody. It was my mother.

My condolences to you and your family.

That ol' saying 'bout "time heals all wounds", is BS. Been fifteen-years, and while not as frequent, or dominant, there are still times......

Condolences.

Very sorry to hear that, John. It's never an easy thing.

Condolences on your loss, John.

I am attending a funeral tomorrow for a woman that was like a second mother to me. My Lillian was 99 years old.

sorry for the loss of your mother .I sure miss mine ,been a year.

John -

I will keep you and her in my prayers.

Terry

Sorry about your loss. Troy

Sorry to hear that John, that's a tough one for everybody.

My condolences to you and your family.
Paul B.

Mom's have a special place in our hearts. Prayers sent.

Sorry to hear of your loss John. It's never easy, even (especially?) when we see it coming. We lost Mom over six years ago. The wife and I finally got together after two bad marriages each. We are the happiest people in the world. When she was a little girl, she was a favorite of my Mom's. I often say to her, "I wish Mom were here to see us now." She always reminds me, "She is."