Thanks - do have a powder check on our Dillon and have been using a Chrono. Had a match today and ran into a squib load. Couple days ago, I ran through 200 rounds at 4.0 grains TG, .377 crimp and everything went fine. I was chronoing around 1,130 fps. I decided to run the exact same specs for today's match, but decided to dial it down to 3.9 grains and ended up with a squib. Question is would that .1 have made that much of a difference that I would have gotten a squib? I didn't think so, but many of the other shooters were saying temperature may have caused. When I tested my loads couple days ago, it was around 60 degrees. This morning it was a cold 40 something degrees. I read that titegroup was temp sensitive, but didn't know it was that sensitive?
This was out of a XDm 5.25 and OAL of the bullet was ~ 1.137
Also, have a batch of Montana Gold CMJ's coming in.