I bought two boxes of 300 grain Break-Away solids to develop a load for my .375 H&H. I have searched, but it seems there is not a whole lot of data out there yet on these solids from actual use. They look like a great option, definitely pricy, but I would be interested in hearing more about how these are actually performing in the field. I have been using the CEB Safari Solids but am experiencing bullet setback in the magazine under recoil. If I seat the CEB solid out to crimp between first two driving bands to eliminate setback, the OAL is too long for my magazine. Thinking the Swift solid will eliminate this issue and pair well with the A-Frames in this rifle.