I didn't realize that either. I used it to determine to get a 73 for deer. I used some on the ballistic data in the text and decided that since all of my shots on my place are 75 yards max, it would do fine. I was right....twice this year. The 92 look like the way to go for Ruger type loads. I think the Marlin is at least as strong but like the RV, not an exact clone.