After close to 20k rounds through my original P-09, I had a problem today. I was hoping to compare some IMI 9mm 115 JHP to my usual AA 115 gr JHP at 100 yards, using the red dot equipped absolutely perfect shooting precision match pistol. First 30 rounds looked fair, but with more horizontal spread than I expected. Next 20 were off the paper. I looked at the Springer Precision dovetail mount holding my original Burris Fast Fire 3 3moa red dot, and it had shifted a quarter inch to the left in the slide dovetail! I packed up and went home, removed the sight, loosened the set screws, tapped the mount back in, blue loctite on all the screws and put it all back together.
What did I learn? Stuff loosens up over time, even with a little blue loctite on the tiny screws. I think I'll go check my 97 while I'm thinking about it, even though it was perfect last time out.
I probably bumped the dovetail mount either carrying the gun around or when I was cleaning it last, or I bumped it with a tripod or camera while it was in the soft case. I'll have to zero it again. For the first time in a LONG time. I know, I know, a slide cut would take care of this once and for all. The P-10's have spoiled me.
One other thing I learned today. I actually prefer the P-10 striker trigger pull (after CGW parts and some polishing) to the P-09/07 trigger pull (after CGW parts). The reach is noticeably shorter on the P-09 in single action compared to the P-10, and I like the P-10 finger pressure versus trigger travel curve more. Personal preference, not for everyone.
I guess I'll have to return to the range on Friday morning and zero that pistol again, and maybe repeat my 100 yard test.
Joe