model 66 4" Taurus is the one that is a little tighter. The other is a Taurus Tracker with a 6.5" barrel. They both are shooting the 0.358" bullets fine. The only thing I do not like about these guns is they have a very short cylinders. The cartridge length is very critical with some bullets. As is the crimp. I was using a Redding profile crimp die on a few bullets and they were jumping the crimp. I had to go back and use a regular crimp die to do a regular roll crimp. Then no issues.
