bullet weight

[JSA]

For example a .22 bullet is 40 grain, how much is one grain? Is this a unit of measurement? I had heard it is by grams?
Thanks :JHP rocks:

[Lone Wolf]

They are units of dry measurement, as follows:

<div class='quotetop'>QUOTE </div>

grain (gr) [1]
a traditional unit of weight. The grain, equal to 1/480 troy ounce (see also pound [2]), or exactly 64.798 91 milligrams, was the legal foundation of traditional English weight systems, with various pounds being defined as a specified number of grains: 5760 grains in a troy pound and 7000 grains in an avoirdupois pound, for example. In the version of the troy system used by jewelers, there are 24 grains in a pennyweight and 20 pennyweight in an ounce. In the version used by apothecaries, there are 20 grains in a scruple, 3 scruples in a dram, and 8 drams in an ounce. Originally the grain was defined in England as the weight of a barleycorn. This made the English grain larger the corresponding grain units of France and other nations of the Continent, because those units were based on the weight of the smaller wheat grain[/b]

<div class='quotetop'>QUOTE </div>

gram (g)
a unit of mass in the metric system. The name comes the Latin gramma, which was a small weight similar to the English grain. The gram was originally defined to be the mass of one cubic centimeter of pure water, but to provide precise standards it was necessary to construct physical objects of specified mass. One gram is now defined to be 1/1000 of the mass of the standard kilogram, a platinum-iridium bar carefully guarded by the International Bureau of Weights and Measures in Paris for more than a century. (The kilogram, rather than the gram, is considered the base unit of mass in the SI.) The gram is a small mass, equal to about 15.432 grains or 0.035 273 966 ounce. The original French spelling gramme is sometimes used. Note: The only correct symbol for the gram is g. The abbreviations "gm" and (worse) "gr" should never be used.[/b]

[AMMOe]

...And for shooting purposes, we use the definition of 1/7000 of a pound. A 40 grain bullet = 40/7000 of a pound, etc. Powder is measured by the same standard.~AMMOe

[JSA]

Thank you.
:JHP rocks:

[Dave in LB]

Thought many might find this helpful. It&#39;s taken from Hodgdon&#39;s web site.

Hodgdon Powder Company Simple Metric
Conversion Examples

These conversion examples have been prepared to give an indication of the relative values. Hodgdon Powder Company is not responsible for miscalculations of these relative values.

FOR POWDER CHARGES
Grains converted into GRAMS, multiply by .0648
Example: 60.0 grains of H4831
60.0 grains of H4831 X .0648 = 3.89 GRAMS of H4831
GRAMS converted into grains, divide by .0648


FOR BULLET WEIGHT

Grains converted into GRAMS, multiply by .0648
Example: 130 grain bullet
130 grain bullet X .0648 = 8.42 GRAM BULLET
GRAMS converted into grains, divide by .0648

FOR SHOT WEIGHT

Ounces converted into GRAMS, multiply by 28.35
Example: 1 1/8 ounce (1.125 ounces) 12 gauge load
1.125 ounce 12 gauge load X 28.35 = 31.89 GRAM LOAD
GRAMS converted into ounces, divide by 28.35

FOR CASE LENGTH

Inches converted into MILLIMETERS, multiply by 25.4
Example: .220 Swift max. case length: 2.205 inches
2.205 inches max. case length X 25.4 = 56.01 MILLIMETERS MAX. CASE LENGTH
MILLIMETERS converted into inches divide by 25.4

FOR VELOCITY

Feet Per Second (FPS) converted into METERS PER SECOND (M/S), multiply by .3048
Example: velocity 1305 fps
1305 fps X .3048 = 397.76 METERS PER SECOND (M/S)
METERS PER SECOND (M/S) converted into feet per second, divide by .3048

FOR PRESSURE

Pounds Per Square Inch converted to BAR, multiply by .06895
Example: 10,900 pounds per square inch (PSI)
10,900 pounds per square inch (PSI) X .06895 = 751.56 BARS
BARS converted into pounds per square inch, divide by .06895
With maximum loads, always reduce loads by 6% and work up to the load that works best for you. NEVER EXCEED MAXIMUM LOADS.

[M99ER]

Ev&#39;ry freakin one of you is lookin&#39; uphill! But that&#39;s ok... It looks more technical when it&#39;s uphill in combining &#39;this many&#39; to amount to &#39;that much&#39;. Intimidating too. It&#39;s better if we just &#39;cut the pie&#39;. Take a look from the top of the &#39;ridge&#39;...

The poster asked about grains,, I just want a load to shoot straight...

Simple answer is, (1) pound (is 16 ounces), (1) ounce is 438 grains, like in a one ounce slug for a 12 guage. So, JSA, one standard velocity 40 grain, 22LR bullet would take a pile of a little more than 10 of them to equal 1 ounce.

NEVER YOU MIND THE GRAMS!!@$%&$%^&* (sorry for that rant to you metric friends ok?)

So, it takes 438 grains to make 1 oz. and 16 of those to make a pound.

So if you were &#39;whittlin&#39; lil&#39; pieces off the slug with your pocketknife and made them small enough to make it into over 400 pieces... They&#39;d be a grain apiece. Get my drift?


Damn!
The question is, or was, what&#39;s a grain? It&#39;s the weight of one &#39;grain&#39; (seed) of wheat. Never mind what else I said... sorrrrryyeeee

[jeh7mmmag]

Grains and other units. I found this excellent freeware last month. I have used it at work (Engineering) and home and find it very helpful and easy to use. Add a shortcut to your desk top to make it handy.

http://www.joshmadison.com/software/