I like the cartridge. It's one super round that was well ahead of the short-mag craze. One problem with it an Encore: The extractor has to be relatively loose ( on a weak spring) in order to slip over the fat case and behind the rebated rim. Thus is can easily slip off the rim of a cartridge that sticks a bit. And I don't mean much. This is based on personal experience. Had a buck that had been hit hard but not out laying some 50 yards out in front of my stand. Imagine my surprise when I opened the action but heard the extractor slip over the rim. Fortunately the buck wasn't going anywhere as I extracted the case with my Leatherman. I had worked up the load (using Rl 19) when it was considerably cooler and it worked fine. But on this unseasonably warm Nov day it generated just a tad more pressure causing the problem cited. I would suggest a temp insensitive powder like H4350 if you do go this route.
I LIKE MY 284 BARREL, BUT TAKE PRECAUTIONS TO KEEP THE LOAD BELOW MAX. PRESSURE.
FWIW, Encores and Contenders seem to work best with rimmed cases.