Adventurer 2
New member
I finally got a chronograph at the end of last year. I've been having fun shooting my reloads through it this year. It's a Pact. Yesterday, I was shooting a reload box of .357 125 grain bullets over 15.8 grains of H110. One of the rounds didn't sound or feel right. I stopped firing opened the revolver and extracted a split case. This case had been fired one time prior. I checked the chrono and it had a velocity of 2820 fps. The other shots on that string averaged 1244 fps. I thought, Oh sh.t, double charge. Looked at the revolver, couldn't see any damage. Wrote some info on a card and closed that box up. When I got home I opened that box up, pulled a bullet measured the powder - 15.8 grains. Pulled another bullet 15.8 grains. Tried to funnel the powder from two bullets into one case - overflowing powder. I can't imagine I would ever not notice that much powder as I have only ever used a single stage press. Probably the most that could fit in a case is 20 grain of H110 with a bullet seated.
Is it possible that the split case caused a reading on the chrono as high as 2820 fps?
Is it possible that the split case caused a reading on the chrono as high as 2820 fps?