I have been swapping sights on some pistols, primarily a FNS-9 and a bevy of Glocks. Mostly to try different sight configurations and see what I prefer. In the process, I have realized I don't know what I don't know about zeroing a pistol. I did a search and could not find these questions answered going through ten pages of results.
Would anyone care to share their general process for zeroing a new to them pistol?
Any particular course of fire?
Two hand one hand, off hand?
How many rounds and at what distance?
What is acceptable group size at the selected distance to be even considered for zeroing the gun?
One observation I will add from my time fooling around with it thus far: the pistol should probably be zeroed offhand standing because I noticed a distinct difference in grouping off hand versus sand bagged with my sand bagged groups pulling more to the left than offhand for some reason (right handed shooter.)
Thanks in advance.