75 ELD's are running 3,090 in my 21" 1-7" Bartlein with 27.6 gr of Leverevolution in formed Rem cases.
Fire forming loads are running 2,960 which I'd consider a very warm load for a saami .223.
Pharmseller has 75's scooting 3,100 with TAC in a 23" .223 Tikka. Might ask him as I've never messed with TAC but it's been available more than Lever so might have to check it out if worse comes to worse and Pharmseller still has a face.
Lots and lots of threads of all the usual suspects arguing about .223AI though. Might do a search.