Today I picked up a 1916 spanish mauser for $150. Upon getting home I discovered that when the gun is on fire and locked, when you begin the action of pulling it back it shoots the bolt to the back automatically, and upon closing it there is a lot of resistance to it as well in the last half an inch or so. When you put it on safe however there is no resistance at all, I don't know if that means anything or not. I understand that it is a C.O.C gun but it seems way harder than anybody else's that i've seen on youtube ect. One more thing to note is that at first the safety was completely locked up and would not budge, after fidgeting around with it I did eventually get it to work. You'll also have to forgive me if say anything stupid because i'm completely new to mausers and milsurps in general. Thank you.