Starline pretty much cornered the brass market a long time ago, their brass is excellent & lasts forever. I also have a bunch of Federal brass that I've been shooting heavy 45 loads in for a long time. Primer pockets are still tight, no cracks at the case mouth & its several years old.
The 44 is an excellent caliber but when you go to heavy weight bullets the 45, in good brass & in a Ruger easily out performs it. Use the 800-850 fps loads in the old Colts or replics or for cowboy action shooting. The Winchester & Remington cases with the crimped case work fine for these loads & even last quite a while with somewhat higher pressures.

Dick