I am contemplating the same quick change system in .22 and 6mm warp spead rifle, west texas ordanence switch barrel system on two calibres. 22Gt for rabbits and foxes PRC FOR WARP SPEED steel , egg shoot at Diggle. Can't seeing it being a problem , just have some indexing marks on action , tubes and set scope (zero) for one calibre then zero for second, make a note on final zero and repeat for both tubes. Won't be a million miles out. That's my plan any way๐. Got a new bolt head for my TR action for PRC WARP rifle so that's what I am doing in the next few months. I could buy a new action but another 2k and trigger say ยฃ300 -.ยฃ2300 all up , I will save me pennies and I mite put it towards a 6-36-56 PM11. I have a a 7.5 Bartlien carbon landing shortly 24" . CANT see me parting with my chassis at the minute solid base, and not too heavy.i know its not everyone's cup of tea , but I like the concept of 2 calibres on one action and ease of changing.