They have been called a few things..... Smython , Smolt.

This gun I had built by the Davis Co. in 1977
It`s 6" nickle plated with a target hammer and a polished trigger and an great action job. I fired it just about every day for about 2 years on the PPC corses in california as a cop in my younger days. It helped me produce an avrege score of 300 with a 45 to 50 X count .I moved on to a custom bull barrel Model 19 and moved up to 50 to 55 x count
I put the smolt away and never fired again.

I`m selling it for 1000.00

It`s in great shape

Thank`s larry hardy

I will post a pic as i figure this out