Which is better, the .458 SOCOM or the .50 BeowulfTM?
This is one of those debates that neither side wins. Both cartridges are very similar, yet they are quite different. We had access to some of the information on the predecessor of the .50 BeowulfTM when we designed the .458 SOCOM. We designed it the way we did for very specific reasons. I admit I cannot be impartial, but I will give as honest a comparison of the two as I can: Rim size the SOCOM rim is the same as the .308 Winchester (7.62 x 51), the Beowulf rim is the same as the 7.62 x 39 M43 cartridge used in the AK-47. The B rim is easier in that you can use existing bolts for the AR. The S rim is easier in that there are hundreds of thousands of (old) bolt action rifles that use this same rim and that could be retrofitted to the SOCOM (all the old Mauser rifles .) Case length as mentioned earlier, the B is 4mm longer than the S. A lot of this extra room is taken up by the body of the bullet anyway, so it does not gain you that much. Headspace the B uses the case mouth, the S the sh