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Could someone explain to me exactly how the grain of a bullet is defined?

And how it can effect range/accuracy? I hear people talking about grains all the time, but I never question it, I just kinda go with what they're saying on it.

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Grains is a measurement of weight. The weight of a bullet does not affect it's accuracy, but it does affect about every other aspect of performance.

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Grain is the measurement of which part of it?
The powder, or the bullet?
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Both, but separate.
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When you buy a box of rounds at Wally-World, listed on the box will be the weight of the bullet, in grains.
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THAT'S IT!
A more simple answer asking a more simple question...
I'm more of a "learn from experience" person, if you can't already tell!
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The weight listed on boxes of bullets is always the bullet weight, never the powder.
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Grain is the amount of powder in the casing ... and can vary depending on the grade of powder. Think of a grain of powder as a grain of sand.

Smokeless powder is different from black powder .. and you can buy various grain "sizes" of black powder, depending on your use and how fast you want it to burn.

EDIT: For a bullet ... 1 oz = 437.5 gr

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I've heard that, and also that the amount of grains is the weight of the bullet itself? I'm confused
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Walt, this is a carry-over question from earlier where we were discussing bullet weight and barrel twist. While you are correct talking about powder, don't confuse Josh. One step at a time. Lol-
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Lets say there's a .22lr, and it's a 40 grain. But next to it, is a 32 grain, of the same caliber. The difference is the amount of powder, right?
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Simply put Josh, grains is a measurement of weight, bullets or powder. Your body weight could be measured in grains.
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For cereal. When I get confused, I go on mad question rants, and I don't sleep for days!!!!
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Is that a fat joke?
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Alright Red, that makes more sense, but same question to you about the .22lr. If a box of ammo is labeled a certain grain, is that the grains of powder?
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No a grain is not 1 grain of gunpowder , grain is a measurement of weight.
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So it is grains of weight that make up the bullet?
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No one bullet weighs 40 grains the other weighs 36 grains.
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No, your .22 box will show the weight of the bullet, in grains.
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Alright then. That description makes more sense
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So the heaver bullet, being more grains, can be better for longer distances, correct?
Does the weight affect how well a bullet can spin?
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The heavier bullet will have more kinetic energy than a lighter bullet at the same distance. The lighter bullet won't drop as much as the heavier bullet.
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The barrels twist and powder charge determines how fast a bullet spins.
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So for a 1500 meter shot (strictly hypothetical, of course), would a 250 grain bullet, or a 300 grain billet, be better, that being the weight of the bullet?
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Josh. I've killed rabbits at 200 yards with a 36 grain bullet. A 40 grain bulletin would have hit harder, being heavier due to kinetic energy, also known as knock down power.
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So for accuracy at distance, a higher grain is not always needed, only for greatly increased distances?
Knock down power is good, that leads me to my next question: Higher grain makes for more knock down power, so is it a higher penetrating bullet? Or does kinetic energy get transferred on contact, out of the bullet, to its target?
(Excluding paper)
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Josh, I will text you later. Easier and no comment time-out. I am going outside to shoot my .38 special using 158gr lead swc bullets, a distance of 21 feet, at a paper target.
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Have tons of fun with it!
Either tomorrow, or Friday, I plan on shooting a .44mag for the first time, and am getting step-by-step closer to getting my mom to buy a gun. She likes the Mark III, SR22, and the Sig Mosquito so far. Probably try those again also
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Yes. It's not the weight of the bullet that makes it more accurate, its the rifle. The bulletin that will be most accurate in a given rifle will be determined by shooting groups. If you have 2 of the same rifle and shoot the same ammo in both, one will be more accurate than the other. By shooting groups with various ammo, the rifle will tell you what it likes best. Get your 22 and shoot at the exact same spot 5 times at 50 yards. Get different ammo and do it again. The smallest group is the ammo your rifle likes best.
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Good tip, thanks
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Grain is a measurement of weight, like pounds and ounces is.

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I hate asking questions like these!
I ask them in person, and someone responds "you should know that!!!"
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I could swear I left a comment...
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If you wish to ask in person there's an email address in my profile. This info your wanting to learn can be very confusing.
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I'll probably send you an email about it. Most gun-related questions are taboo on here anyway
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Who cares what the anti gunners think. Don't let them chase you away. Just keep asking your questions and if you get confused you can always email me. "Them" is the reason I'm coyote hunter. I put what they don't like right up front in their face so they know what I am.
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Good point. They just get crapping annoying after a while
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Ignore them, they don't know what they're talking about most the time anyway.
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