there are calculators to help figure it out, but it would be irresponsible to NOT check your zero after a trip up the mtn. just don't do it opening morning and be sure of your backstop. you will shoot better if you know your gun does what you want vs guessing. it should not end up being enough to worry about unless you are already way high, but you really need to do it to reconfirm your zero range.

Originally Posted by BrentD

I would not buy something that runs on any kind of primer given the possibility of primer shortages and even regulations. In fact, why not buy a flintlock? Really. Rocks aren't going away anytime soon.