I don't see them on Hornady's site, either. The ones at Midsouth may be old stock if the bullet is discontinued. Usually, bullets with crimp cannelures are less accurate than versions without a cannelure because it is very hard to form a cannelure without distorting the bullet some. But that cannelure is pretty far forward along the bearing surface, so I don't think it will have much effect. They are pretty certain to shoot much better than military penetrator bullets.
If you want a high accuracy bullet, you can try the 60-grain Sierra Tipped MatchKing as being close to your weight. Berger used to make a 62-grain flat base bullet, I think, but I no longer see it.