The more precisely you can aim, the more accurately you’ll shoot. Generally, you want to have at least 8X available, but personally, I like 9X or 10X a lot better, and on varmint rifles I consider 20X the minimum. Make sure the scope works. More than once I’ve seen a gun apparently go haywire, and it was actually the scope that went weird. It’s easy to spot one with loose adjustments or a busted reticle: The point of impact won’t move up or down or right or left with any consistency, and the rifle it’s mounted on won’t group at all. Few guns, no matter how accuracy-impaired, won’t give you some kind of a group if the scope is working.