Hello,
The only gain to getting an Encore is bigger or should I say hotter calibers. the Encore will take the rifle calibers that the contender will not. Ex; 30-06. 300 Win mag , 22-250 .
The barrels from the Contender and the Encore will not interchange. When I say Contender I also mean G-2.
The g-2 frame and the Encore do have the same grip angle but the grips do not interchange.
You can get a spacer from OTT to use the Encore grip or rifle stock on the G-2.
hope this helps
Neal