I had a neighbor ask me if I wanted a 7.7 jap rifle. Sure I said, something new to toy with. First of all the rifle he gave me is no 7.7 Jap. No round safety on the back of the bolt, no egg shaped knob on the cocking handle and this rifle cocks upon closing not opening. It is clearly a mauser, looks to be a 7mm mauser in fact. There is no third lug on the bolt and again it cocks on closing. Can someone tell me what model of mauser this is? There is no crest on the from action ring and the barrel is a stepped military type. How strong is it compared to the M-98?