The shimmed RK shell is a good choice for everyone searching for a everyday workhorse...
It has
a good coverage and the shimming works as expected.
In comparison to the standard Tango
shell it is a tad smaller (which is very appreciated), but the face shows a little bit more
distortion (strange, but true).
Keep in mind that this shell is meant for the "modern"
nickel-brass coins (post 1971) - the 1964 silver Kennedys ask for a silver shell.
So in
conclusion this is a solid purchase and I'd give it 3.5-4 stars resulting in 4 for this review...