Well Ihave them both , both give me ragged holes at 100 years . the Encore is 45x209 with a 26" barrel , the Omega is 50x209 with a 28" barrel . I use the Omega for all-around The Encore because it is shorter , is a great brush gun but works very good all around plus I also have a 223REM barrel for it.
If there is a difference in the guns , it is that the Encore has more options with the different barrels .
Sundowner