Nealm66
I have data in the Lyman Pistol and Revolver Handbook, the Lyman manual and also some from Mr Taffin's book, Big Bore Handguns. I was surprised to see that Mr Taffin's accuracy was extremely impressive all the way out to 50 yards.
PM me an email address, or even better, if you have What's App a mobile number, and I'll give you some of the info from those sources.
An interesting comment was that they Desert Eagle is designed to work with standard weight bullets and loads, i.e. 158gr 357 Mag, 210gr 41, 240gr 44 etc. for proper function. Also only jacketed bullets were recommended in the comments.