Cookie -
Yes and no.
Not to my knowledge.
The 1895's are available with straight and pistol grips, depending on the specific model. The receivers are basically the same except for the grip tangs which are curevd for the pistol grips. Straight grip stocks are interchangeable with straight grip, pistol grip with pistol grip, between the .45-70, 450, .444 and older .375Win and .356Win. Haven't thecked my .30-30 but I expect it is more of the same.
As to a Ballard .30-30, not unless they do it in the Cowboy or MLR. Could be wrong on that, though.