OK, before I was thinking over converting my 110 to a 6.5x55. Now, I'm thinking of converting it to 257 Roberts. Mine is the long action 243. I tried putting a 30-06 in the bag box and it won't fit. I don't have any 257, so I'll look up the OAL of the 257 and just mic the box.

I could have a 257 barrel made for it. Are there any other issues?