I went out to the hunting-lease with Shotgun today.
My goal was to sight-in my newish crossbow.
Shotgun's goal was to verify the zero on his.
I was not successful. He was.
Darned if I was not capable of pulling the string by hand. I just could not get the cam-wheel over-the-hump. Recognizing that I am not getting any younger I bought a "cocking rope" on the way home.
Shotgun graciously allowed me to take his target so I could do my sighting-in at home.
For those who are not familiar with the trajectory of projectiles, the path is roughly parabolic like a clothesline but upside-down so it arches with open-side down. The parabola is lopsided because the projectile slows as it encounters air resistance and the ending part of the parabola arches more sharply downward.
The projectile typically leaves the weapon below the line-of-sight, passes through it on an upward angle, flattens out somewhere above the line-of-sight somewhere mid-range and then drops downward and encounters it again.
There are two schools of sighting-in a weapon. I subscribe to the simple way. I think multiple cross-hairs are invitations to making errors when gripped by buck-fever. I want a single cross-hair and I want the mid-range elevation to be between 2" and 3" above the line-of-sight. Then I can put the cross-hairs on the center of the target's chest confident that I will get a hit if it is within range.
Shotgun subscribes to the church-of-multiple-strata Reticulatum Complicatum Gollydangum. My beef with multiple horizontal hash-marks is that it is counterintuitive to use the higher cross-hair for mid-range targets and the lower cross-hairs for distant targets. The mind does funny things under stress. "I need to hold higher for distant targets..." goes the thinking "...so I need to use the higher cross-hairs." Wrong!
But Shotgun is a full-grown man. He will do what he does. Life gets very complicated when you try to squeeze 10 more yards out of a 40 yard weapon. Worth it if the target can shoot back. Otherwise, I am not so sure.
Based on the trajectory of his cross-bow, if my produces a similar trajectory then my "max range" will be in the neighborhood of 35-to-40 yards using a simple scope and a 3" maximum mid-range excursion from the line-of-sight.
Any comments will be appreciated.