I just weighed ten bullets from a fresh box of .452/250 grain Deep Curls on my cheap AWS digital scale. I weighed each one at least twice. If the first two readings were the same I accepted the weight. If the first two were different I weighed it several times until I got three of the same readings.

Here what I got, from lightest to heaviest.

248.0
248.3
248.8
249.2
249.4
250.5
250.8
251.4
251.4
252.2