You may have followed my exploits with getting a totally unshootable CVA Walker, to making it function, to sending it to the Goon for "the works" plus action shield and cap rake and fitment of a Howell's .45 LC cylinder as well. The proof's in the pudding, as they say, and fit and function of both cylinders was flawless, and the Goonerized action was superb. Here's my son emptying out a cylinder full of 50gr charges of Graf's 3F, Wonder Wads, and .454 round balls...
I also put the conversion cylinder through it's paces with my .45 Colt handloads; 250gr hard cast boolits over 35gr of Graf's 3f black powder. True to form, the Walker managed to drop it's loading lever every shot but one, as shown being caught in the act here...