I've been lurking on this site for a little while, but this is my first post. I've been impressed by the wealth of knowledge here. It has helped me enormously, since I'm a newbie to archery.
My Question (and please forgive if it's already been answered):
If shooting uphill/downhill, is the trajectory different from shooting on a horizontal surface? In other words, if tuning of sights and rest is undertaken on an uphill surface, would the tuning be off when then shooting on a horizontal surface? Instinct tells me yes, but I have no science attached to the "butt dyno".