Howdy, Pards,
Here's a slight update on the sight situation: (Haven't had time to fool with the gun until now...)
Since I need to have a standard sight insert so as to fit holsters, I figured for shooting I could just replace the rear sight insert, and whittle it down to where the point of impact needs to be. To do that I needed another (or 2...in case I mess up one) rear sight insert. Checked with Beretta in January...out of stock. Checked a few weeks ago...still out of stock. Called VTI, which HAS them IN stock! Ordered two, plus a spare latch, in case I want to try making a fixed-sight version.
I get the parts and put them away until this morning. Now, these inserts have a little ledge near the bottom that fit into a groove in the latch. A bar with two screws clamps the sight to the latch body. I didn't realize the inserts have the bar, so they are NOT adjustable for elevation (unless you file off the ridge), but slide from side-to-side in the groove. Loosening those two little screws is a job! They are TINY, both in width and thickness of the slot. Ruined one optical screwdriver blade! Finally tried the smallest blade from one of those brass-handled nested screwdriver sets (this one has a hammer on the largest piece). That worked! Got the screws loosened up. CAUTION! DO NOT TAKE THE SCREWS ALL THE WAY OUT OF THE LATCH! NEITHER BERETTA NOR VTI HAVE THE SCREWS IN STOCK! Slid the original insert out sideways from the latch and the clamp piece.
Now, imaging my surprise when I looked at the parts shipped to me by VTI versus the one that came with the gun. The VTI parts are .029" SHORTER than the original! And the sighting notch is deeper (.038")!
I don't exactly know how much this will lower the point of impact at 25 yds., but I figure at least 3-1/4". I'll take it out to our monthly match on Sunday.
What I can't figure is why the higher blade on the gun as it came from the factory, versus that of the two aftermarket inserts. The IPB shows the part number as Z8600154, which is the only rear sight insert shown. (Let's hear it for configuration management!)
If anybody with a 5" happens to remove their rear sight inserts, the original on mine measures .236" from the bottom to the top, versus .207" for the replacements. I'd like to know if the higher ones are standard for the shorter barrels.