I would highly recommend Match Grade Machine. They made this 375 H&H Magnum barrel for me and it shoots great. They'll even put the pretty flutes on the barrel if you like.
It may have changed but several years ago when I checked, SSK Industries' Encore handgun barrels weren't made to take standard factory forends so I didn't buy one.
On the other hand, I use SSK Industries' T'SOB scope base and 4 of their rings on all of my heaving recoiling Encore and Contender handgun barrels.