Ammo weight question.

[Rhythm of Life]

I have some Speer Gold Dot GDHP 9mm 124 grain ammo and I threw them on my scale the other day.

I had 2 weigh 12.2 grams
9 weigh 12.3 grams
7 weigh 12.4 grams
2 weigh 12.5 grams

Is it just me or should they be all the same weight?

[J-cat]

It's you.

Ammunition is composed of the following components:

Bullet
Case
Primer
Powder

Each of these has a weight tolerance. Bullets have the greatest weight variance, followed by the case, followed by the powder, and primers are the most consistent of the bunch.

What you see is normal weight variance.

[CSACANNONEER]

Using grams to weigh ammunition or components is not great. Specially, since you are only wieghing them to a tenth of a gram.

[Rhythm of Life]

It's you.

Ammunition is composed of the following components:

Bullet
Case
Primer
Powder

Each of these has a weight tolerance. Bullets have the greatest weight variance, followed by the case, followed by the powder, and primers are the most consistent of the bunch.

What you see is normal weight variance.

Makes sense, didn't think of it that way.

Using grams to weigh ammunition or components is not great. Specially, since you are only wieghing them to a tenth of a gram.

Yeah, I wish I had a hundredth to put in there but baking scales are not so precise.

[zfields]

or one that measures in grains...

[ireload]

Total ammo weight has variance. To be honest that's not bad at all (what OP has posted). In order for the ammo to be consistent with weight, the commercial manufacturer has to weight the bullet and brass. Use the ones that are "on the money" weight wise and precisely measure the powder charge. You'll find most or all commercial manufacturer are not willing to do that it will cut down on their manufacturing time. On the other hand certain individual reloaders (precission) will go the extra mile.

[Boots]

Total ammo weight has variance. To be honest that's not bad at all (what OP has posted). In order for the ammo to be consistent with weight, the commercial manufacturer has to weight the bullet and brass. Use the ones that are "on the money" weight wise and precisely measure the powder charge. You'll find most or all commercial manufacturer are not willing to do that it will cut down on their manufacturing time. On the other hand certain individual reloaders (precission) will go the extra mile.

Also sniper teams. Was watching a program on the Military Channel on the support team for sniper teams where they where weighing bullet and grouping them by variance and loading each for a specific rifle. Was interesting to watch.

[E Pluribus Unum]

Makes sense, didn't think of it that way.



Yeah, I wish I had a hundredth to put in there but baking scales are not so precise.

Oh really...... doing a lot of "baking", are you?

If you only use half the time the recipe calls for, does that make you "half baked"?


Weigh the same bullet 10 times.... I bet you get different measurements.

[Rhythm of Life]

Oh really...... doing a lot of "baking", are you?

If you only use half the time the recipe calls for, does that make you "half baked"?


Weigh the same bullet 10 times.... I bet you get different measurements.

ASSuming are you?

If you wanna throw down in the kitchen or on the grill I'm all for it.

PS The scale isn't off....

[CSACANNONEER]

http://www.calguns.net/calgunforum/showthread.php?p=5159050#post5159050

Notice that .1grains (typically the unit and increments which powder is measured in) is only 0.006.....grams. Having a scale which measures to the nearest hundreth of a gram is still not good enough. A scale capable of measuring to 1/2 or a hundreth of a grams or .005 grams in the absolute minimum that I would feel comfortable with.