Friday the weather was great so off to the range. Had a grand ole time with a .38, wrestled through an anemic 9mm load that would not cycle my M&P but the trouble started when I pulled out the .357 SAA. This was my first load with AA #7 under a 156g gas checked bullet. Loaded up the six and the first round didn’t feel right, Way too powerful with a pretty good muzzle flip. Went to pull the hammer back to the loading notch to upload and look at the brass, and the gun was tied up hard. Luckily I was able to get the base pin out and work the cylinder out. The 5 remaining rounds fell right out and somewhere along the way the primer fell out of the fired case which was well stuck in the cylinder. Back in the range bag for the trip home. The case was stuck pretty good but punched out out of the cylinder with a good sharp rap. So far as I can tell the gun survived the encounter, nothing looks cracked, broken or bent.
In the post analysis, I broke down some of the remaining remaining rounds In the box and found 17g of #7 not the expected 10. Not sure how I did that!!! I generally double check powder loads using my trusty 5-10 and an electronic scale to confirm
The only thing I can figure is that my process was interrupted by something like the wife, dog, grandkid, phone and so on and I missed the confirm powder dump setting on either my Uniflow or Lyman 55.