Finally got around to making up a new block that will accept the rimfire and the PPC barrels.
The old block was 6 in. long and had 4 bolts per side.
The new block is 7.5 in. long and has 5 bolts per side and is bored round to accept different dia. sleeves for the different dia. barrels.
Also made a new mount that locates the scope off set to the left and slightly higher.
Shot it today with the rimfire barrel and the results look VERY promising.