That should absolutely not be the takeaway. Vertical is effected far less compared to horizontal, and you aren't going to be off by 5" vertically at 300 yards because of cant. The examples are always a 308 shooting 1,000+ yards and 5 or 10 or more degrees of cant. That is not reality. If you don't know you have 10 degrees of cant, you might want to see a neurologist.Nice! So unless you know exactly how much cant you hold, you could be off by 5" vertical at 300 yards,
It is linear.I have been watching YouTube videos on long range shooting. Primarily Barbour Creek shooting school. They did an episode where they illustrated how much a 10-15 degree cant can affect impact at 1,000 yards. What I am wondering is how much will it affect 500 yards, 400 etc? Is this a linear thing where 500 would be off half as much as 1,000? Main reason for asking is if I do not shoot beyond 600 yards, is a scope level absolutely necessary?
The chart shows -0.43-inches of vertical error at 300-yards with a 10-degree cant using a 308 (168 SMK with MV of 2700 fps, 2-inch sight height, & zero'd at 100 yards). The horizontal error is 4.95-inches.I dont use an angle finder on my rifles.
and the 5” error is from the 300 yd chart in your attachment.