Are Some MTH RailKing & Premiere Freight Cars Made With The Same Tooling?

I can't answer for sure about the freight cars. I have quite a few RK cars that definitely look scale and I run them with my scale stuff. They look like older rolling stock when freight cars were smaller than the more modern cars on prototype railroads, like cars from the '20's or '30's. I know that some of the RK locos are early Premier offerings that have been relegated to the RK line as newer more detailed models have been made. I think that is the case with my C-628's. My RK steel caboose is almost identical to my Weaver caboose of like design. I am fairly certain all of the Weaver stuff is scale.

The caboose models are often the same size between RailKing and Premier. I am not aware of other car types that are the same size.

Ore cars are definitely the same in both classes as are Bobber cabooses.   Joe  

I know the bay window and offset steel cabooses are the same. Not sure                 about anything else.

The word that I got was that older Premier level tooling would be used for Railking. Then new tooling would be made for the Premier level.

I believe this even happened to some engines like the SD series for example. I believe this was stated by MTH some years back?

They're definitely doing that with locomotives. The RailKing Scale line is what they call it.
I'm wondering specifically about the 50' Airslide Hoppers and any other freight cars.

Rich,

I believe only the cabooses use the same tooling.

The railking and premier slag cars are both the same size. Only the diecast chassis and the trucks are different.