I am loading these just for target practice. The 4.9, 5.0 & 5.1 Gr. of 231 seemed to be the most accurate, and didn't spank very much at all. This was the first time I fired the M&P 340 since I put on the new Eagle Secret Service Ebony grips. Sweet feel! This gun is double action only and I was shooting low for the most part. As I got closer to the max load of 5.1 my groupings went from 6-8 inches down to 2-4 inches at 7 yards. After I got finished testing all the .38 rounds, my buddy came in and let me shoot his 40 cal Glock. I fired 6 out of 12 in the bullseye. Uh-oh, could that be my next obsession? Reload to save money, yeah right! Thank the Lord for a good job!