Received the No.3 front sight blade from CZ USA during the week, so I installed it yesterday and took my 455 full stock to the range this afternoon.
This is an indoor range, so I am limited to 25 yards, but it is still possible to get a good base zero for longer ranges, as you all know.
Here is the first target shot.
Both 5 shot groups were shot using a six o'clock hold on the black bull at 25 yards.
The upper group was the first one shot. The front sight blade was positioned were the factory No. 2 blade was.
The lower group was the second string of 5 shots fired after I moved the new No. 3 blade to the highest position on the front ramp.
Bingo. All variations left to right or up and down are entirely due to me and my 62 year old eyes. I was bracing on the shelf in my firing lane, and tried as best I could to keep a repeated position and cheek weld. I will say that the peep makes sight alignment much easier, and faster for me, as that is what I am used to from my days of shooting in service rifle competition with the M1 Garand and AR 15.
That group height above POA should give a good zero out to 50 yards or so.
Both groups were fired using SK Standard + .22LR ammo. I fired subsequent groups with Norma-USA "Tac-22" rounds. (R in shield headstamp) and the groups tightened up a little bit.
So far these are the best loads I have shot out of my 455. CCI Stardard and CCI Green Tag were only so-so.
