I wasn't buying anything direct from Midway in 1990 (no online store dont-cha-know) but did somehow end up with a couple of hundred of those 44 mag cases.
I think they have a little less capacity than the big boys and are heavier, thicker.
My fave load is 18 gr 2400/260 WFNGC in the Midway and 19 grains in W-W.
I either bought them at the LGS or at swap meets, gun shows, etc.
They still work fine although I don't shoot magnums much any more.
I must say Midway now has some of the most impressive online store software out there.
That has to be a massive program and yet it works well.