I didn’t mean to turn this into right and wrong just needed some information. I ended up removing the barrel and have installed it on my large ring receiver. Everything headspaced correctly and it is ready to go. As for the Kar98a receiver I’m think 6.5x55 or 7mm mauser. I’ll also need to find a small ring scope mount but I think a M96 scope mount might work not sure. Thank you all for your help though!