My OAL is 2.7200". That's measuring from the base of the case to the ogive using the Stoney Point OAL guage/bullet comparator.
I tried several powder/primer combos and nothing worked till I seated the bullets .020" off the lands.
Each rifle is different in this aspect. Some guys on this forum said they jammed theirs in the lands, others were just touching and some were jumping to the lands.
I tried the powders you listed, less RL19, plus Retumbo and IMR7828. I would love to try those powders again with the bullets seated .020" off. I've used alot of RL22 for the 7Mag in the past. Good luck with yours. Don't give up! Mine aggrevated me enough I considered trading or selling my rifle. Glad I didn't now. JohnnyK.
"The only thing necessay for the triumph of evil is for good men to do nothing."