For giggles I picked up some .357 140 ftx just to try. The winchester loaded boxes (both 150 and 180) says .357 for the bullet diameter. Loaded them on top of lil gun (24 grains). They shot and loaded really well, and shott less than .5 at 50. the trick is not to run the brass threw the resizer and it loads like a champ. Note: I used winchester brass, other brass might vary in thickness. I'm going to try the 158 next