It's been no secret around here that I've been yearning for a big bore rifle, possibly built on the AR platform. I've always assumed it would be a .50 Beowulf, because it's a .50 caliber, and the name is cool, screaming "Epic Beastslayer of Legend!" After extensive research, I've changed my mind, and placed an order for a new AR upper. Except for the name, which screams "Playstation Kiddie", the .458 SOCOM offers more potential than the Beowulf.

Both rounds are expensive and only offer factory loadings from one manufacturer. To get the most from either round while maintaining any kind of economy, hand loading is necessary. The SOCOM allows for many more options, ranging from 250 to 600 grain projectiles, including "Dangerous Game" style solid rounds. The SOCOM uses rifle bullets, instead of the handgun bullets fired by the Beowulf. The SOCOM puts more velocity and energy out of a 16" barrel than the Beowulf does out of a 24" barrel for a comparable bullet. The SOCOM uses unmodified GI magazines, while the Beowulf requires slight modification to the feed lips. Lastly, the SOCOM has suppressors available.

I've placed an order for a Rock River Arms upper half, and have placed orders for loading dies, brass, and assorted projectiles. It will probably be a few months before I receive the upper. In the meantime, I'll need to spend some time reviewing various loads, then I'll need to acquire the proper powder - unfortunately nothing I have in stock should be used to propel this round. I've got some Winchester large pistol primers, but might need to pick up something else.

I think for now I will keep this as a "spare" upper, rather than matching it permanently to a lower receiver.