Hello, I have a noobish question that I know some haters will love to hag me on. But first, I know a lot about guns themselves, but I am teaching myself now about the ammo they take. I know the calibers but what is the grain? I know it is a measurement. Does the grain go for the whole round or just the bullet and not the powder/ case. So if I have a 40 grain .22 LR round, what does all that mean (obviously it' .22 long rifle but how much powder is charged in it and what is the weight of the bullet if measured in grains?) Is it also true that the more grains a bullet has, the less recoil? Thanks guys and I appreciate all the input on past posts!