You guys have asked some questions I can't answer and I have other questions for them I can't find answers for. I'd seen the site before but as they charged for the data I wasn't of the mind to pay for it, as Manny said, because so much is available free. Firpo hit the nail on the head. They have at least some data you aren't going to find in any manual, anywhere, any time. Check your books for data for an 8 X 60R Magnum. I'll guarantee none of you will find it unless you happen to have a Rottweil loading manual. Then you need Rottweil powders. There is some information as to what powders of ours interchange with Rottweil but it's both minimal and scarce. Load Data has probably 40 loads for the cartridge. After comparing cartridges, loads, powders with various bullets in various rifles over the past 40 years I've gotten a pretty good feel for what will and won't work, ia or is not safe. So, Id be comfortable making a choice from their data.
The thing that confuses/concerns me about the site is if you look for the 8 X 60R on their site, it shows it "not found" but a search on line turns it up. Same with 8.15 X 46R and several other cartridges I tried to find on their site. Maybe that all changes if a fella subscribes but I don't know that. Soooooo....I don't know if I'll shell out the $34.00 or not.