Alright, I am trying to figure out which rail will best suit a new rifle that is coming. 338/300 rum - planning on shooting 300 SMK at 2800. The scope is a Swarovski 6-24 PH. 1/6 MOA clicks. This scope has 43 MOA elevation which is 239 clicks according to a person I spoke to at Swaro. I entered the load info in a ballistics calculator and assuming a 300 yard zero, I will need 126 clicks to get it out to 1000 yds. Seems like 20 MOA should be plenty but I am assuming there is a way to figure exactly what you will be working with and what is needed. Just having a hard time thinking my way through it. Any help is appreciated. Thanks.