I loaded up some 155gr Montana Gold 40 S&W rounds this weekend that I have had sitting around for over a year. I did 2 batches of 50 rounds just to check them out. The first batch was loaded with 5.5 Titegroup seated at 1.125 and the second batch was loaded with IMR7625 at 6.6 again at 1.125. My goal was to compare the two powders to see which one I liked best before loading a few hundred rounds.
The issue I had was that with the Titegroup after every 4th or 5th round I fired I had a stove pipe. I thought it might be the load so I switched to the IMR 7625 batch. This time every 12 to 15 rounds resulted in a stove pipe.
I was using my EMP 40 which has not had any issues using the same powders firing 180 or 165 plated from RMR or Berrys. I bought the Montana Gold 155's because they were cheap and wanted to save a few bucks.
Any ideas on what might be causing this?
The issue I had was that with the Titegroup after every 4th or 5th round I fired I had a stove pipe. I thought it might be the load so I switched to the IMR 7625 batch. This time every 12 to 15 rounds resulted in a stove pipe.
I was using my EMP 40 which has not had any issues using the same powders firing 180 or 165 plated from RMR or Berrys. I bought the Montana Gold 155's because they were cheap and wanted to save a few bucks.
Any ideas on what might be causing this?