Does anyone here have a conversion barrel for either a Glock 20 or 21 that is an oddball caliber, and how to you like it; something like 9x25 Dillion, 400 Corbon, 40 Super, 460 Rowland, 38 Super, etc? Is there any problems such as excessive wear or failures to feed? I know they have G20 conversion barrels in 9mm, 40S&W, and 357 SIG, but I am just curious about the oddball calibers for the large frame Glock. I looked on the Lone Wolf website. They have quite a few, and I was just thinking about which one I should get. Reloading die availability and cost would also be a factor. I think 460 Rowland would just use standard 45ACP dies. .