I am installing a new barrel on a mauser receiver. The receiver is a model 98 by JP Sauer and sons, it is a new barrel from Midway USA (Adams and Bennet). I watched the videos by Larry Potterfield , they all show him screwing the barrel on by hand all the way till the barrel touches the receiver. that's not happening here , I turn the barrel maybe 3/4 turn and then it gets tight, of course Im Just using my hands and no tools yet . How much force does it normally take to screw them together? the threads in the receiver look fine as do the threads on the barrel , everything looks in square but its tight before a complete turn . Any advice would be greatly appreciated................LOUD