THANKS.......jimmy, Hondo and others............appreciate your help.

THE REPORT: Just came off my gun bench.

Did the swap. The 15-5 in 6 inch is so tight (like been fired only 20 times) that I had to jimmy things out of and into place.
Then it seemed to be a little rough in cocking.

And in spite of my grinding a special screwdriver blade to remove and re-install the mainspring, one went into orbit 3 times in the process, but was lucky and found it all 3 times.

THEN............I eyeballed the triggers and hammers more closely: The TT and TH installed in the 99.8% 6" 15-5 looked "old." The case colors were gone. I looked at the older 15-3 in 4" and there were those pretty "fresh" case colored hammer and trigger.

Don't laugh, but I swapped them all back and kept things as they were.........and think I am happier that way. Wait a minute, PLEASE LAUGH !!

In reality, I have plenty of Smiths in all models and calibers to shoot. The 6-inch 15-5 is still so New that I wiped it off and returned it to safe storage as an investment ........will probably never fire it again.

As for the 15-3, it is a nickel beater that has seen a lot of use.

I gotta laugh at myself...........sort of wasted a whole afternoon

If anything, the experience of going inside of K frame guts for only my 2nd and 3rd times and then going back into them for my 4th and 5th times was good experience.

Y'all take care, Bo