I have built a new front sight for my Greener Martini 577/500 No.2 Express.

I am ready to file the sight in. Today I shot three rounds, 6 o'clock point of aim front sight level wit the top of the at 100 yards. They were 5 inches low. Low was as hopped for.

First thing I learned is this project need to wait until after my cataract surgery in January. I can't see sights or target clear enough.

Second I got to wondering if for this gun and cartridge if I might be better off setting sight zero at 50 yards.

Comments please, 50 yards zero or 100 yards.