In other sizes, yes, in .40 caliber I don't know of any. T/C used to offer molds for their maxi-balls in .32, .36, .45, .50 & .54 but only round balls in .40 caliber. I also don't believe any available .40 caliber barrel would be suited to conical bullets. It's almost impossible to get a conical bullet started straight unless it is sized to an easy sliding fit atop the lands. It depends on the kick of the powder charge to upset the bullet to fill the grooves. Barrels for conical bullets need rather shallow grooves, .004" to .005" deep for best results whereas roundball barrels generally have deeper grooves of .008-.014" deep. Barrels strictly for conicals will also have a faster twist as needed to stabilize an elongated bullet. A 48" twist is fine for .40 caliber balls but would not stabilize a long bullet. If you could find a mold, the bullet, to stabilize in the 48" twist, would have to be so short as to offer no advantage over the ball.
The problem is there is just not much demand for .40 caliber. It is popular with some offhand competition shooters as a light recoil flat shooting rifle but hunters seem to find it "betwixt and between", too small for big game and too big for small game, they want .32's or .36's for squirrel rifles and .45 or larger for deer.
Here's a link to the Dixie Cub kit made by Pedersoli.
http://www.dixiegunworks.com/product_info.php?cPath=22_162_192&products_id=885