I recently saw some Winchester Silvertip JHP in .45 Colt. I think it was a 200 gr bullet, but it may have been 225. Didn't pay much attention, because I have no use for lightweight .45 Colt bullets. I see no point in loading down the .45 Colt so that it is not even as powerful as .45 ACP. I have smaller, lighter, pistols that will shoot .45 auto.
I handloaded some 230 FMJ in .45 Colt some decades ago, just for fun. I have NEVER seen a factory-loaded FMJ round for .45 Colt. And I like the cartridge, so I tend to pay attention to the various offerings, even if I don't buy 'em.
Oh, yes--I read about some special, pre-fragmented ammo, akin to the Glaser Safety slug, but these were lighter still.
Best,
Johnny