cast bullet weight tolerance question

[chaneylake]

I started back casting bullets today, Paul Jones .40 cal mold, certified lead 30:1, casting temp 750, using pot and pouring with ladle.

weights ranged from 421.1 grains to 422.6 grains, with the bulk weighing 421.9 - 422.0

this is only my third year of casting

all bullets appear excellent to my 62 yo eyes

Is this to much of a weight spread?