I have replaced barrels on both K98ks and M48s ... but no 24/47s.
If the 24/47 barrels are duplicates of the M48s, the barrels are a little bit shorter (perhaps ½"?) and the stepping is slightly different from that of the K98k ... meaning that K98k barrels will probably not play nicely with 24/47 or M48 stock wood barrel channels.
I mention that because I glanced at the Lothar site and saw none list specifically for 24/47 or M48s. Perhaps I missed them.
Just something of which to be aware.
Good luck with your project,
CHBMSPT, and
Welcome to THR!