I know that this is an old thread but I thought I'd see if anyone else has a Springfield Stalker. I recently got one in .45 caliber. It looks like a well build rifle. The ramrod thimble and ramrod are missing on mine. I do, however, have one of those old telescoping H&R ramrods. That has to be the worst ramrod ever made. I wonder who came up with that idea? I'm thinking about doing a little customizing on mine. Thinking of fitting it nose cap, ramrod entry pipe, under-rib and a couple of thimbles. I have an old Navy Arms Buffalo Hunter in .58 caliber. It has those features.
There is not a heck of a lot of info out on these rifles.
If anyone has a .45 Stalker I would like to find out what loads & bullet/ball size you are using.