DWalt
Member
Only similar in that it's an 8mm. round. The Swedes designated the rifle as the m/40 and the 8X63 round m/32. It was used as an anti tank round and was known to break a collarbone or two. Crown Jewels, The Mauser in Sweden by Dana Jones calls the m/32 the most powerful military small arms cartridge in the world which may be an exaggeration. Never the less a testament to the strength of the K98k receiver which has been used to make everything caliber wise. A pretty well known dealer has just sold a Swedish m/40 for $26K, it's a pretty rare bird in the States.
The 8x63mm Swede and the 8mm-'06 cartridges are not that far apart dimensionally or ballistically, and I'd consider them to be in the same class. Checking the dimensional data in Donnelly's cartridge conversion manual, the main difference is that the 8x63mm case has a rebated rim with a slightly fatter body (base diameter is about .488" vs .470" of the 8mm-'06). The rim diameters and case lengths are equal, in fact the 8mm-'06 case is a slight bit longer. The MVs given by Donnelly are fairly close - 2880 ft/sec for the 8x63mm vs. 2820 ft/sec for the 8mm-'06.