I have the old tried and true .280, 24" barrel, medium taper in the Encore and have been shooting it since the Encore came out. I had and still have an old Remington 7MM Express (280) and I have always shot 140 or 150 grn bullets from them. My Encore I use if I have to use a rifle is shooting the 140 Accubonds with Varget. I have taken several deer and two Elk with the 140 grn Accubond. With the rifle I get 2950 fps. The twist on the factory Encore is 1-9. One bull elk was at 405 yards in 20° weather with some snow.
I have the .280 in the Encore Pistol also and shoot the same load. It is running 2830 fps. I also have the .284 in the Encore pistol, 15" and a XP100 Custom in .284, 15" barrel and shoot the 140grn Accubonds. I'm glad I bought up over 500 of them early in 2020.
Mike