I shot 175 rounds today and was much less tired than I was doing the same a month ago. I also put 50 rounds of .357 mag down range as I've neglected my revolvers for quite awhile.
I know the 9mm is easier to shoot, but I also know it's a problem with my fundamentals right now. The 9mm will help mask it, but I need to actually figure it out and fix it. I'm laying off the dry fire until I get it figured out, too. No use burning in more bad reps.