8mm comercial rounds in the US are way under what the 308 is loaded at. europeans however factory load the 8mm to full potential. there are to many pr 98 mauser bolt actions that will not handel the pressures so the US loads weak. the hotest load in my lyman book is 48,000 PSI not CUP simiular loads rated with the cup meathod are around 35,000-40,000 CUP, About the same or less as 7.62x39 the hotest hand load shown for 7.62x39 is 44,700 cup if it were rated in PSI it would likely be around 50,000 psi based on other loads listed but dont take my word for this. 8mm bolt thrust would be higher as the case head is slightly larger and the same as the 308. bolt thrust is what I feel should be considerd most important. for example there are max loads listed in the book for the 223 at 51,800 CUP, not PSI but the smaller.378 case head means there is less bolt thrust than a 308 WIN with the same PSI in the chamber as it has a .473 case head. some were on this site I think it was posted on my 308 AK post there is a formula for figuring out bolt thrust. It involves square route and math I dont know how to do. It would be great if some one could figure it out and post some numbers here. 8mm mauser barrels can be found on ebay for around 10- dollars I bought 4 one time for $15 for all.