So much bad info in one thread.... OMG....
The 14/19 barrel swap won't work out well, the rifling twist on the 14 is faster than on the 19, bad accuracy. And you can't shoot Magnums in the 14.
Bronze wool I agree with, Flitz, not so much. If you're going to use Scotchbrite you need to used something as lubricant, water, oil, something, anything, just don't use it dry. Stop screwing with household Scotchbrite, go to an automotive supply house that has paint and body supplies and buy their stuff, much more consistent, higher quality and better selection. It comes in 8.5 x 11 sheets and can be cut with an old pair of scissors.
This is the grit size breakdown for Scotchbrite....
Dark Gray, 150
Brown, 240
Maroon, 320
Green, 600
Light Gray, 800
White, 1500