Isn't it nice when something all comes together? Sounds like you haver your rifle figured out with a good load! I'm older and my eyesight is not the best anymore. Fact is, 50 yards is about the max I shoot now and I chuckle when I hear about how "good" somebody can shoot at 100 yards. I'm happy for 'em - really - and am not questioning them but for me, at 100 yards the target had better be on the large side or i'd probably have trouble making the sight picture and target all come together to get real tight groups. At 50, I can still do pretty well with open iron sights and am surprised at what I'm able to do with my Uberti 45 SAA Colt clone but I chalk up most of it to "luck". Good going and enjoy that rifle! Some folks get discouraged as they age and can't hit things as well as they used to - but I don't worry about those things as I'm killing paper and and and don't hunt anymore. As long as you can smell the smoke and send lead downrange - its all about ending the shooting! Have fun and enjoy!