A group like that i would stick with 100 grains .and adjust the scope . I am not a Mag Load fan . I have only used 100 grains of pyrodex , 90 grains of BH209 and now use only 85 grains of 777 and get groups like yours but i can only use a 1x scope here. so i shoot at 50 yards for groups . I tried 100 grains of BH209 in my encore with a 26'' barrel and had powder all over the snow in front of me ?? Make me wounder how much powder is not being burned and going on the ground with Mag loads . The other day i shooting and thought i missed the target with shots 2 through 5 , i had one hole . i aimed #6 a 1' to the right to see , it hit 1'' to the right of the other 5 shot hole . I was amazed of the group my encore was doing with 85 grains of 777 and the .25 acp conversion . But that was at 35 yards but still it put them in the same hole .