I've shot thousands of rounds from T/C Encore platform rifles. No doubt the best propellant I've shot through them has been BH209. However T7 worked very well before BH209 became available.
My bullet of choice for the Encore platform, has always been Barnes. Some barrels needed the T-EZ bullet because they were tight, others shot the TMZ perfect. Both the 250gr and 290gr work excellent. They do not fail, only the shooter and his/her shot placement. Harvested many deer out to 250yds with Barnes bullets from Encore platform rifles.