Whether double action or single action, I am very satisfied with the Hogue hardwood without finger grooves. Trigger reach and recoil control are perfect. A heavy gun benefits from a striped cap as Hogue calls it. for normal sized hands a grip without a striped cap fits better.
the photos show round-to-square conversions, but it makes no difference to the grip dimension if i use a square butt.
regards from Germany
Ulrich