Hi Kate, to be honest, I don't think TMY at 200 is much of a pull, since the rating on it is usually just a little higher than that for me, about 1/3 stop. I would suggest developing it like normal, with a slightly (maybe 10-15%) reduced time, and meter as always. You will probably get a nice, full-Zoned negative with that, assuming the light is normal.(posted 8816 days ago)As for 'true' pulling, Tri-X does this well. I've also shot Delta 400 at 100 by mistake, realized it while developing, and got acceptable results, fwiw. :-)