How accurate is grain weight in factory bullets?

salzo

I have a redding powder and bullet scale. I wanted to check the accuracy of the scale, by weighing a bullet I just purchased.
Balanced the scale at 0, put the bullet, a 225 grain, onto the tray, bullet registered at a weight of 224.7 grains. Weighed another one, got the same read.
So, is it my scale, or are the bullets a tad lighter than the advertised 225 grain weight.
They are nosler partition bullets.
The scale is a redding magnetic balance scale.

temblor

They are not exact and will vary differently by type and brand, usually in tenths of a grain ( ie: 54.8gr vs 55.1gr, etc. )........

JustC

even match bullets will vary just a bit. It's nothing new.

salzo

Thanks fellas. Just want to make sure everythings kosher before I start reloading.

Pinhead

If you've got a set of calipers, you will find they also vary in length.

r_himmelreich

I have found the same thing. My Nosler .338 225gr Partitions are right about what you say. I have found Hornady's to be somewhat heavier than they advertise (7mm 139gr actually weighs 144.5gr etc) but consistent from one bullet to another. Nothing to worry about. That is why we all have to work up loads due to all the variables.

RH

mrbruce

Thats the reason most all the hot-shots bench shooters weigh each and ever bullet before shooting a match.
Just getting rid of varibles..............