I broke my own rules and failed to clean these three pistols before driving back to the Hill Country last weekend. Granddaughter visit took precedence, all firearms locked up for four days. I shot the CGW 97B"E" last, but got in three great range sessions in the Mountains of New Mexico. They each had only 50-100 rounds through them and it didn't take much to clean them up. The barrels were already soaking in the pickle jar with the Hoppe's #9 when I took this photo.
I only shot these at 100 yards, and, this trip, I just re-zeroed the red dots for 100 yards, 60F, 6000 feet altitude, no wind, IMI 115 JHP in the P-10F, AA 115 JHP in the P-10S, and AA 185 JHP in the 97B"E". The best group for the week was from the 97B"E" at 3-3/8" for five shots at 100 yards from a wrist rest. The three pistols are pretty much perfect mechanically, I shot the best group on the last range visit when I was relaxed, confident, and had accumulated some similar good results and, more importantly, trigger time with the polymer guns. If I had shot the P-10S last, I think the best group would have been with it. Or the P-10F. I don't have a CZ that I haven't shot under 4" with at least once.
I do pay a lot more attention to the breech face and barrel surfaces at the chamber end to make sure there isn't any powder residue left that would affect the barrel lock up and cause the zero to shift. I've had an occasion or two where grunge resulted in some vertical stringing at 100 yards, due to the barrel not going to exactly the same position in the slide from shot to shot. I'll check these surfaces every 50 rounds or so now.
Next, I will put a masking tape label on the slides to remind me that these guns are zeroed at 100 in thin air. They will shoot a little high at 25 and 50 yards!
The Holosun click adjustments on the sights are not as fine as the Burris. I can't get the 100 yard zero perfect on the Holosun sights as the zero shifts nearly 2" or 2 moa per click at 100 yards where as the Burris is closer to 1" or 1 moa. In some ways, using a 25 yard zero and a hold point target roughly 8" higher than the intended target works better because you can shift the aim point to compensate for wind or density altitude or ammo changes and you never have to touch the zero adjustments. But it was kind of fun to shoot at one target. It was also fun to aim directly at the center of a hanging steel 12"x24" plate at 100 and know that I was going to hit it shot after shot without guessing at the holdover.
Joe
