take this. A few days ago I was to reload some Cartridge's, so I look up the data in Sierra reloading data book and wrote down information . Something told me to call Sierra to verify the load data, sure enough it was changed, 3 gr. less on starting load, so I'm saying is what good did it do me to buy this load data book if there going to change data, I might as well just call them instead of using the info in there reloading manual. The data reloading book is not cheep, it's about 40 something dollars. So I called them and they said they retest and don't send out changes WHAT SAY YOU ?