That is pretty much what I decided. A friend of mine had a Black Diamond that I polished the bore on, and it looked quite different than the marlin. I was hoping that I was wrong and that it could work. The owner of the rifle runs a seasonal produce stand and somebody came by wanting to sell the marlin. My friend thought it looked like it was a good rifle, so he bought it. The plunder action on those rifles gets really cruddy with #11 caps and he wanted me to look for a 209 upgrade for it. I guess I will call Marlin and ask. Thanks.