Lyman #452423 is the quintessential 45 Auto Rim bullet. I have a two-cavity Lyman that I think is fairly modern/late edition, I won it in a drawing at an NCBS meeting years ago. I have cast a bit with it, and in 92/6/2 alloy its offspring scale at 238 grains, which is the design's spec weight on paper.
I haven't shot a lot of these through my 625 yet--about 100 so far. Stoked with 5.5 grains of WW-231 and CCI #300 primers in Starline brass they print the same place on target as my carry loads do at 15 yards (WWB 230 HPs). No critters have fallen to this pistol's bark yet, but it will happen. And indoor ranges SUCK, too!
ETA--I am not one to object to the heft of a sidearm worn all day. The 4.25" barrel on my 625 is not awkward to carry, and its heft feels little different than that of the Glock 23 after a few hours. I have always found that heft to be comforting--as opposed to being tiresome. My hands get along a LOT better with larger grips/pistols than with small-frame bangers--the Colt D-frame is about the smallest that works for me, the S&W J-frames even with Pachmayr Compacs installed don't mesh well with big-ol' paws. I have tried to love my S&W 642, but after years of 9mm/40 S&W/45 ACP/357 Magnum as goblin medicine 'Little Noisy' just falls short.