Tony - Sierra's 240 grain JHC has one, and it's pretty nice. Hornady makes a 250, and Speer a 260, both also with crimp grooves. I haven't tried the last two, but the Sierra works well in .45 ACP/AR.
Never used a bullet heavier than 230 gr. in the 45 ACP. I guess if you want to shoot real stout loads using a 45 AR case thge crimpo might help.