Unfortunately for the .45 inline, with the popularity of the .50inline and associated wide variety of loads available, the .45 inline is somewhat past vogue and becoming more and more difficult to find redily. But you can find them.

I would stick with the Knight Wolverine, DISCor can also find a T/C Black Diamond XR45, Omega in .45 or and Encore in .45.

Tahquamenon