I've used Berrys quite a bit over the years and have had nothing buy exceptional results with them.
Unless a manufacturer is TRULY screwing the pooch (and the customer) by lying about the hardness of the lead or the dimensions of their molds, it's not really rocket science.
Some of the best cast bullets I ever got were from my local gunshop in Pennsylvania, supplied by a guy who did it part time in his garage as a hobby.
Why anyone would set up a casting machine as a hobby is beyond me, but for a number of years I bought only his bullets. And then he had the temerity to die...
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.