If your eyes aren't wonderful and you want to score well consider my off the wall suggestion.
Drill and tap a fixed sight heavy barrel K frame. I use a four inch M-65 with a Ultra dot Match dot sight.
I had a 8 3/8 M-14 and after putting the red dot sight on it I realized that longer barrel did nothing for me at 25 yards.
I was also shooting a 5 inch 625 with a dot and switched to a four inch.
Ended up using the M-65 for my league. The red dot can be moved around on the rail to adjust the balance you desire and barrel length is a none issue.
Plenty of fixed sight guns around for far less then M-14's.
Any of them are able to be slicked up real easy and you don't feel bad about beveling the charge holes to make loading easier. And I dare say a accidental double charge of 2.7 grains of Bullseye in a .357 might not ruin the cylinder. I use 38 spl brass and 148 grain DEWC.