The grain numbers on ammunition are the projectiles weight in grains, at 7000 grains to a pound equals 437.5 grains to an ounce.
grains.
Its the weight of the ammunition
I assume you mean 'grains' as in cereal. Cheddar cheese does not have these grains.
Glock model
.30 caliber bullet, 30 grains of blackpowder when it was originally made. Smokeless powder is now used. Actually the 30-30 began life as the 30 WCF (Winchester Center Fire) aka 30 Winchester Smokeless or 30 SMOKELESS. The second 30 refers to 30 grains of smokeless powder. (30 grains of black powder would have been a pretty whimpy load)
Expanding Full Metal Jacket
Full Metal jacket.
It means a few grains. Same as a pinch.
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.
Springfield. Like "30-06 SPRG."
Simply put, ammunition that is loaded to a higher pressure to achieve more velocity.