Link......lots of 20 cal info...........
I got the bug in 2007....with the 20 PT & 20 VT
Then the 20-222
Pac Nor is now building me a new 20 PT 10 twist/3 groove--28" long
Threaded for large shank Savage target action
https://www.accurateshooter.com/cartridge-guides/20caliber/