One post was about how some Speer factory Gold Dot ammo off in weight and he had high ES in his test.
He weighed ALL the loads and kept the higest weights for SD work and used the lower loads for practice.

I weighed my GD factory ammo after reading this and , YES....
most were 208 grs, a LOT under that and only six came in at
210 grs in one of my ammo boxes.

Will it make a difference ?
It is just factory ammo...... not Custom ammo.......only made to
go BANG !