Melvin is building me a .260 which he recommended over the cm due to greater brass availability. I have used large capacity cases in the past, and found they wrok best with longer barrels to maximize their potential. Then I found that small cases also can take advantage of more barrel. I am happy if the load I choose gives good hunting performance and 2800-2900 fps.
Things seem a little backed up at the shop, have you gotten an ETA on your rifle? Last I heard they had run out of actions and were building more, and they only have 4 guys working there. From what I got talking with Melvin is they are working hard at catching up.
