Okie john: I was not aware of that tumbling propensity of wadcutters at relatively "short range".
I have shot thousands of rounds of 38 wadcutters at 50 yards and don't ever recall seeing a "tumbled" bullet there at 50 yards.
I don't ever recall, though, ever shooting at a paper target further than a measured exact 50 yards.
I have some 38 wadcutters and if I can figure out where to hold at 100 yards i'll give that a try "for the record".
Thanks for your insight.
Hold into the wind
VarmintGuy