I think if leading, low cost, and cleanliness, are musts then plated bullets are a good option. I figured you want plinking loads primarily, so the fact that most dont have cannelures shouldn' present an issue. Id think a mild taper crimp would do just fine
I just bought a box of 500 Berry's, or maybe Rainier(sp.), 45acp for about $75. Sure they were 230s but I imagine a .452 250gr, or thereabout, wouldn't cost a whole lot more
I feel the H XTPs--esp Mags--have a pretty good jacketing for hunting but a waste of $ for casual shootin'.