CCI makes CB Longs and I have found them to be more accurate in LR chambers than any of the CB Shorts I have tested.
That was the nice thing about these WW CB match that they were made on a .22 Long case. I may find a few more around to pass to Gary as a Christmas gift but everything is in the process of being packed for the move from MD to NH. I know what I packed but I bet I''ll still be surprised when I unpack.
This is the stuff.
https://www.midwayusa.com/product/2900129854