I have run them on direct thread 308 cans to shoot 5.56, 5/8x24 to 1/2x28 without any issues.
I also run a 1/2 x 36 to 1/2x28 on my 9mm AR. But I am not sure I would do that on a pistol. If you did, get one from a quality company and Rockset it on tight. Just my opinion though