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Overall Loaded Bullet Weight

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30 August 2009, 10:43
Brennanc9093
Overall Loaded Bullet Weight
Hey guys, im new to handloading. After completely loading 5 rounds of 22-250, i weighed each individual round. 4 rounds were close to the same overall weight, while 1 round was lighter. Why is this?


Speak softly and carry a big stick, and you will go far. -- Teddy Roosevelt
30 August 2009, 12:44
Winchester 69
If it's not the bullet, it's either the case or the powder charge.

Pull the bullet and find out which.


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30 August 2009, 18:47
stillbeeman
How much lighter?
30 August 2009, 19:25
ted thorn
I will say with 99.9% certanty that it is the variation a case to case weight not bullet/powder.


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31 August 2009, 23:37
temmi
What weights do you consider close?
It could be the bullet, case, powder… who knows…
The brass weight varies greatly even if taken from one set of 20 Factory loaded cartridges. The bullets also vary quite a bit…
Unless you weigh all the components you are hard pressed to figure it out
I’m one of the crazies who weigh bullets (and separate into batches of exact weights) and cases (separate into batches of +/- .5 grs) before priming (and weigh again after priming) and weigh each charge.
I add up the all the individual weights and get an estimated cartridge weight… then I weigh the completed cartridge which should be within +/- .3 grains of my estimated weight range.
01 September 2009, 01:41
Dark Helmet
quote:
Originally posted by temmi:
What weights do you consider close?
It could be the bullet, case, powder… who knows…
The brass weight varies greatly even if taken from one set of 20 Factory loaded cartridges. The bullets also vary quite a bit…
Unless you weigh all the components you are hard pressed to figure it out
I’m one of the crazies who weigh bullets (and separate into batches of exact weights) and cases (separate into batches of +/- .5 grs) before priming (and weigh again after priming) and weigh each charge.
I add up the all the individual weights and get an estimated cartridge weight… then I weigh the completed cartridge which should be within +/- .3 grains of my estimated weight range.


wow, that is some serious dedication!!!


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01 September 2009, 02:21
fredj338
It depends, you could have a variation of as much as 5gr in a loaded round like the 22-250. It's why it's almost impossible to verify charge wts. but weighing the entire loaded round. The larger the case & bullet, the greater variation that is possible.


LIFE IS NOT A SPECTATOR'S SPORT!
01 September 2009, 03:27
Winchester 69
It's important that you determine if the variation is in the weight of the powder charge. If your charge weight is not consistent, you have a potentially dangerous situation. It's also necessary to determine the cause of any charge weight variation so that it may be corrected.


________________________
"Every country has the government it deserves." - Joseph de Maistre
01 September 2009, 04:47
stillbeeman
The situation is dangerous only if you are running a load that is way beyond red line. Please, this sport, while needing a careful attention to detail, is no more dangerous than hobby shopping with power tools.
We still haven't learned HOW MUCH difference there was in the weighed cartridge. To the one poster, while a variance of .3 grains might be an irritation, I daresay, it wouldn't create a dangerous situation.
01 September 2009, 12:12
homebrewer
quote:
Hey guys, I'm new to handloading. After completely loading 5 rounds of 22-250, I weighed each individual round. 4 rounds were close to the same overall weight, while 1 round was lighter. Why is this?

Do you throw your powder straight from the measure into the case? Some powder measures will vary a bit from charge to charge. For real accurate measuring, I set my measure about half a grain low, then trickle up to weight with a Redding powder trickler over my RCBS Rangemaster 750 scale. I do this for my 300WSM target loads. I just throw the .223 plinkin' loads. If they hit a VW Bug at 50 yards, I'm happy...