Originally Posted by ABNAK
Okay, finally got over to my buddy's and used his bullet puller. The DT 125gr miked at .351"
I think we have the answer as to why it keyholed.
Out of curiousity, did you mike only the base or farther up the bullet body as well? I ask with reason as perhaps DT is using some type of crimp setup that is squeezing down the bullet base as the .357 SIG is notorious for setback. Also, this might be a bullet vendor issue and DT does not know of it. Drop them a line.