Grain refers to the weight of the bullet when measured on a powder scale.
The reference to grains means the weight of the bullet.
Means the mass of the projectile is 240 grain or ~15.6 grams.
115 grains is the weight of the bullet.
This means the weight of the bullet itself. A common misunderstanding is that the higher the grain the better. Which is not true. A larger grain is slower than a smaller grain. Find which grain of bullet shoots the most accurate out of your gun. There are 7,000 grains to a pound.
The difference between a 40 grain bullet and a 36 grain bullet lies in their weight. The 40 grain bullet is heavier, which can result in higher velocity and potentially better accuracy due to increased stability. However, the 36 grain bullet may have a flatter trajectory due to its lighter weight.
The weight of the bullet. They can range from 25 grain (Small rifles) to over 400 grain for big game.
A grain is a weight. Smaller than an ounce or a gram- its a tiny amount. When talking about guns, grains refers to how much gunpowder is in each bullet. A bullet with more grains of gunpowder has more bang to it than a bullet with less grains of gun powder.
The muzzle velocity of a Winchester .30-30 varies depending on the load and the bullet, but we can ball park things a bit. With a "standard" load and a 110 grain bullet, it's about 2,690 fps (feet per second). For a 130 grain bullet, about 2,500 fps. A 150 grain bullet cuts it to about 2,400 fps. With the 170 grain bullet, it drops to about 2,200 fps.
The heaviest bullet in my reloading manuals for the .380 is a 120 grain cast bullet.
.408 Supersonic Chey-Tac round. It uses a 419-grain or 305-grain cartridge, and uses a Spitzer bullet
The grains of a bullet, be it black powder or not , is the weight of the bullet. Lets say you have a .50 caliber rifle, and fire a 250 grain bullet at a target and hit dead center. Then fire a 300 grain bullet, that bullet will hit slightly lower on the target , but will have more force or stopping power" due to the weight. So the higher the grain the heaver the bullet.