This is the top reason, that I wouldn't think of a belted magnum rifle cartridge for the T/C Encore.
Some have similar problems with rebated rims like the 284 Winchester as well.
I have heard people bend it down, polish or adjust until it clears.
I shoot 223 Remington, 7mm-08 Remington, 243 Winchester and 454 Casull in my T/C Encore.
-I haven't had to bend, polish or adjust the extractor, all brass loads and unloads smoothly.
yooper77