Ron This cadet is square with the world at the Block and I would not want to lap much as the hardness is not very deep. This cadet is in the hot altered case Bee and is used for Coyote control. The 45gr Sierra .224 @ 3100fps works good.cdupuy,
The one thing that I did to my Cadet in rimless 222 (conversion from Frank DeHass books) was to lap the block face square to the bore. I made a threaded stub to align the lap with the receiver & the rifle shoots quite well.
I just picked up another Cadet in 357 mag that I'll rebarrel to something else, but perhaps just a rechamber to 357 maximum would be interesting.
Regards,
Ron