Bill,

Thanks for posting that great chart. For the same frame it appears, in general, that the longer the barrel the taller the sight blade . . . and that seems logical.

In the NT 38/357 frames that general rule seems to be the case. However, for the KT 38 frame it appears to be almost the opposite. A 2" shows .146", a 4" shows .106", and a 6 or 8 3/8" shows .126".

I believe the .106" entry for the 4" is a typo. Most of the blades I replace are 4" barrel KTs and I normally use a .146".

Please help set me straight.

Thanks, Russ