Here's a different crf. This is a 450 Watts, MRC 99. It is a hybrid between a Win 70 and a Mauser. There is no bevel (ramp) milled into the front face of the "bolt head support" and it is a bit narrower. But you'll notice the three main "players" that control rearward movement of a cartridge as it is loaded into the magazine are the same and show good perpendicular alignment- the bolt head support boss, the ejector and the left rail cut-out. This action also loads and cycles flawlessly. FYI for comparison, the 450 Watts is simply a slightly longer 458 Lott. It will not be as tapered as a 375 so is more straight-walled thus similar to the 416 Rem Mag.