I would stay with the 10X SS. There are other factors. Do you have MILDOTS? Or any mil type ranging reticle? I too had a 20X SS, but I traded it back in for a 10X. I am used to hold overs for my 10x going back to my Army days. Milling is not a factor with me as I pretty much memorized ranges. If you use 20 X, you have to double everything, range, hold overs, etc. It is good that you have various calibers, and that is what makes shooting fun. But I am a believer, at least in the vernacular of why everyone is on this web forum, that you are training as much as you are having fun shooting. To use a scope correctly and in real world is all about muscle memory. So keeping the same power on your scopes, unless you are going .50 cal or .338 Lap, is a no brainer. Just my 2 cents. Stay with the 10X.