Quote Originally Posted by Burnt Fingers View Post
Proportions.

If you're using 5 grains of powder that 0.5 grains is a 10% difference.

If you're using a 230 gr bullet that 0.5 grains is a 0.2% difference. Or a 50X difference.

If my powder measure was +/- 0.5 grains I'd find a different powder measure. If my 4 cavity mold was +/- 0.5 grains across the four cavities I'd be dancing in the street.

Don't obsess about the small stuff, 0.2% is small stuff, 10% isn't.
That would depend on application.
a 230 gr bullet in a 45 acp shooting 15 yds a .2% off center weight difference ( off centered air pocket) probably would not show much
Take that same 230 gr bullet in a rifle shooting 100 yds plus it would make a much larger difference