I own a Steyr 96 SBS in 308 Win. caliber. I am considering a re-barrel for a different caliber. Does anybody out there know what the thread pattern is for the receiver/barrel? (Example: 3/4" x 18 tpi -- or 25 mm x 10 threads per cm --metric?) Also, besides the magazine, can I replace just the bolt face, or does the entire bolt have to be replaced? Thanks much!